Re: [c-prog] Need help for open docx
On Sun 2010-07-25 21:11:27 UTC-0700, Esmaeil MIRZAEE (esmaeilmirz...@yahoo.com) wrote: I need a header for open/read docx file. Header files don't work that way. They mostly contain declarations, not actual code that does anything. http://en.wikipedia.org/wiki/Header_file For example I write my own Office. Good luck with that. You'd be better off starting out with working code, eg. Abiword. But from your initial question it sounds as though you have a lot to learn about C/C++ first before you try to do anything so advanced.
Re: [c-prog] Need help for open docx
On Mon, Jul 26, 2010 at 12:11 AM, Esmaeil MIRZAEE esmaeilmirz...@yahoo.com wrote: Hi all I need a header for open/read docx file. For example I write my own Office. Best Regards Esmaeil MIRZAEE PS:I use Linux and C++ Start with the source code from Open Office: http://download.openoffice.org/source/index.html They also have an SDK, which is probably what you'd want to use (just getting the header won't accomplish what you want). Good luck -- Brett In the rhythm of music a secret is hidden; If I were to divulge it, it would overturn the world. -- Jelaleddin Rumi
Re: [c-prog] Need help for open docx
On 7/26/2010 5:07 PM, andrew clarke wrote: On Sun 2010-07-25 21:11:27 UTC-0700, Esmaeil MIRZAEE (esmaeilmirz...@yahoo.com) wrote: I need a header for open/read docx file. Header files don't work that way. They mostly contain declarations, not actual code that does anything. http://en.wikipedia.org/wiki/Header_file For example I write my own Office. Good luck with that. You'd be better off starting out with working code, eg. Abiword. But from your initial question it sounds as though you have a lot to learn about C/C++ first before you try to do anything so advanced. If it were _easy_ to create an Office clone, everyone would do that as their first software project in school and Microsoft's #2 cash cow wouldn't be a cash cow. Even I know better than to try to take on such a project. A quick Google search turned up: http://openxmldeveloper.org/articles/OpenXMLsamples.aspx -- Thomas Hruska CubicleSoft President Barebones CMS is a high-performance, open source content management system for web developers operating in a team environment. An open source CubicleSoft initiative. Your choice of a MIT or LGPL license. http://barebonescms.com/
Re: [c-prog] Need help...
rasheed abdul wrote: Dear friends, In one Algorithm for opening HDF file format in C, I seen that they declared varible in data type as int8, int16, int32. May I know what it is.. While I declared like that in my prgram it showing error as declaration syntex error... Plz guide me... They probably defined it somewhere in their headers using the 'typedef' keyword prior to actually using it. -- Thomas Hruska CubicleSoft President Ph: 517-803-4197 *NEW* MyTaskFocus 1.1 Get on task. Stay on task. http://www.CubicleSoft.com/MyTaskFocus/
Re: [c-prog] Need Help.. CMD
rasheed abdul wrote: Dear friends, Can you plz guide me to run a C or Cpp program through CMD in Windows Xp. I am not familiar in CMD so Plz guide me in step by step http://www.google.com/search?q=command+prompt+tutorial -- Thomas Hruska CubicleSoft President Ph: 517-803-4197 *NEW* MyTaskFocus 1.1 Get on task. Stay on task. http://www.CubicleSoft.com/MyTaskFocus/
Re: [c-prog] Need help...
Types bool, char, wchar_t, and the signed and unsigned integer types
are collectively called integral types.
On my system type char is 8 bits, short int is 16 bits, int is 32 bits, long
long is 64 bits.
I can define the types you mentioned like this:
p, li { white-space: pre-wrap; }
typedef char int8;
typedef short int int16;
typedef int int32;
p, li { white-space: pre-wrap; }
coutcharsizeof(int8)
, short int sizeof(int16)
, int sizeof(int32)
, long longsizeof(long long) // typedef long long int64
endl ;
-space: pre-wrap; }and use the types
int16 Int_16 = 0; int8 Int_8 = 0 ; int32 Int_32 = 0 ;
Hope this is helpful.
Best Regards,
Jim Smith
--- On Tue, 6/30/09, rasheed abdul rashu_76...@yahoo.com wrote:
From: rasheed abdul rashu_76...@yahoo.com
Subject: [c-prog] Need help...
To: c-prog@yahoogroups.com
Date: Tuesday, June 30, 2009, 6:40 AM
Dear friends,
In one Algorithm for opening HDF file format in C, I seen that they
declared varible in data type as int8, int16, int32. May I know what it is..
While I declared like that in my prgram it showing error as declaration syntex
error... Plz guide me...
Love Cricket? Check out live scores, photos, video highlights and more. Click
here http://cricket. yahoo.com
[Non-text portions of this message have been removed]
[Non-text portions of this message have been removed]
Re: [c-prog] need help in this code
we don't correct your code and mail it off to some other place...
I recommend you use something other than turbo to get going.
Thanks,
Tyler Littlefield
Web: tysdomain.com
email: ty...@tysdomain.com
My programs don't have bugs, they're called randomly added features.
- Original Message -
From: vipsiboy
To: c-prog@yahoogroups.com
Sent: Sunday, April 12, 2009 1:44 AM
Subject: [c-prog] need help in this code
#includeiostream.h
#includeconio.h
#includefstream.h
#includestdlib.h
int main(int argc,char *argv[])
{
int number[9]={11,22,33,44,55,66,77,88,99};
if(argc!=3)
{
coutargc = argc\n;
couterror in args\n;
}
ofstream fout1,fout2;
fout1.open(argv[1]);
if (fout1.fail())
{
coutcould t open file;
}
fout2.open(argv[2]);
if (fout2.fail())
{
coutcould nt open file;
}
for(int i=0;i9;i++)
{
if(number[i]%2==0)
fout2number[i] ;
else
fout2number[i] ;
}
fout1.close();
fout2.close();
getch();
return 0;
}
this code written in turbo c++ compiles givs success.
bt showing error while run..
can anyone help me with this code...
pls mail the copy of correct code to hans.vi...@gmail.com
[Non-text portions of this message have been removed]
Re: [c-prog] need help in this code
vipsiboy wrote: snip this code written in turbo c++ compiles givs success. bt showing error while run.. can anyone help me with this code... pls mail the copy of correct code to hans.vi...@gmail.com Well, you did put forth effort, but you are using an ancient compiler and simply asking for a handout solution when we aren't exactly sure what you are attempting to do in the first place. Just saying, It has an error is really generic and ultimately useless. Modern compilers have what are known as debuggers that typically go hand-in-hand with each other. First upgrade your compiler, then learn how to use the debugger (set breakpoints, step through the code line-by-line, see the values of variables at each break, etc.) The old Borland Turbo C/C++ and the Visual Studio 6 compiler suites are incredibly old compilers that are outdated, non-ANSI C/C++ Standards compliant, no one in the industry uses them, and there are infinitely better alternatives out there - many are free - you just have to know where to look. Most members of c-prog will generally not answer questions involving such compilers and will simply tell you to upgrade to a much more modern compiler. Finding a new compiler is quite easy. c-prog maintains a massive 'Links' section on its website. One of those sections is entitled Compilers (free): http://tech.groups.yahoo.com/group/c-prog/links/Compilers_000986587674/ There are hundreds of free compilers to choose from. However, there are just a handful that are popular, well supported, ANSI Standard, and free: Microsoft Visual C++ 2008 Express wxDev-C++ MinGW gcc/g++ C++ compilers are usually backwards-compatible and will also compile C code. Of the compilers listed, Microsoft Visual C++ (including Express) currently has the best debugger on the planet - period. If you are learning C/C++, the ability to step through code line by line and see what is wrong is invaluable. Other compiler suites have debuggers but aren't nearly as good. Should you choose to learn C++ using Microsoft Visual C++, the following video tutorial on using the IDE is highly recommended material: http://msdn.microsoft.com/en-us/beginner/bb964629.aspx There are two commercial (non-free) compilers worth mentioning as well. Compilers that are not free have to provide a LOT of added value to justify their cost. Microsoft Visual Studio 2008 Professional - In general, if you plan on doing Microsoft Windows-specific GUI development (e.g. involving COM, ATL, MFC, Office, Vista, etc.), this is the development suite to have. Many developers enhance the environment with third-party tools such as Visual Assist X. Also, a number of popular open source projects (e.g. TortoiseSVN) will completely build only under the latest version of Visual Studio Professional. Be prepared to pay Microsoft prices though. Comeau C++ - This is the most ANSI Standards compliant compiler in existence. Period. And it is available for virtually every modern platform. They have an online code compiler so you can see if code that doesn't compile under your compiler, but should, will compile under theirs. -- Thomas Hruska CubicleSoft President Ph: 517-803-4197 *NEW* MyTaskFocus 1.1 Get on task. Stay on task. http://www.CubicleSoft.com/MyTaskFocus/
Re: [c-prog] Need help on linklists
google.com surely will. - Original Message - From: shafaq mussadiq To: c-prog@yahoogroups.com Sent: Thursday, February 26, 2009 10:12 AM Subject: [c-prog] Need help on linklists hello; can anyone one provide me code for inserting and deleting any desired element from a link list . [Non-text portions of this message have been removed] [Non-text portions of this message have been removed]
Re: [c-prog] Need Help......
'Let us C' by Yashwant Kanetkar is the best book On Mon, Feb 2, 2009 at 10:04 PM, priyanka patel patelpriyank...@yahoo.co.in wrote: HiFriends i just started Balaguruswami C book.but i want to read book which have examples from basic levels with explaination so anyone can suggest me some good examples book name and if anyone has then kindly send to me.pls frds send it fast its very urgent Regards, Add more friends to your messenger and enjoy! Go to http://messenger.yahoo.com/invite/ [Non-text portions of this message have been removed] [Non-text portions of this message have been removed]
Re: [c-prog] Need Help......
pavan kumar kakumani wrote: 'Let us C' by Yashwant Kanetkar is the best book Second-worst author ever. Single-handedly caused the Turbo C plague in India. Stop recommending him. -- Thomas Hruska CubicleSoft President Ph: 517-803-4197 *NEW* MyTaskFocus 1.1 Get on task. Stay on task. http://www.CubicleSoft.com/MyTaskFocus/
Re: [c-prog] Need Help......
Hello, In response to your mail I would request you, to study Jaswant Kanitkar's 'Let Us C' - Book or to learn 'C' from basic level. After complete the above mentioned book you can study Gotfread's 'C' - Book, which is a standard book to learn 'C' clearly and than Balaguruswami. Thanks Regards, Prosenjit From: priyanka patel patelpriyank...@yahoo.co.in To: c-prog@yahoogroups.com Sent: Monday, 2 February, 2009 11:04:32 PM Subject: [c-prog] Need Help.. HiFriends i just started Balaguruswami C book.but i want to read book which have examples from basic levels with explaination so anyone can suggest me some good examples book name and if anyone has then kindly send to me.pls frds send it fast its very urgent Regards, Add more friends to your messenger and enjoy! Go to http://messenger. yahoo.com/ invite/ [Non-text portions of this message have been removed] Download prohibited? No problem. CHAT from any browser, without download. Go to http://in.webmessenger.yahoo.com/ [Non-text portions of this message have been removed]
Re: [c-prog] Need Help......
PROSENJIT CHAKRABORTY wrote:
Hello,
In response to your mail I would request you, to study Jaswant Kanitkar's
'Let Us C' - Book or to learn 'C' from basic level. After complete the above
mentioned book you can study Gotfread's 'C' - Book, which is a standard book
to learn 'C' clearly and than Balaguruswami.
Thanks
Regards,
Prosenjit
Yashwant/Yashawant/Jaswant (can we figure out how to spell this guy's
name, I've seen it written at least a half-dozen different names) is the
second worst author of C books - recommends/mentions Turbo C. He
single-handedly created the Turbo C plague in India and does NOT follow
the ANSI C Standard. Avoid at all costs.
For Gottfried (I couldn't find a 'Gotfread'):
http://www.amazon.com/Schaums-Outline-Programming-Byron-Gottfried/dp/0070240353
One of the reviewers states:
Not updated to current ANSI standard!
The preface by the author suggests that the second (current) edtion
reflects the current ANSI standard.
('The sample programs conforms to the ANSI C standard').
I found examples where it does not:
On page 294, the author states that 'an array within a function MUST be
defined as a STATIC array so that it can be initialized'.
The are numerous examples which correspond the classic C but not the ANSI C:
Exmaples 10.14, 10.12..
A statement on page 215: 'automatic arrays can not be initialized is
not also correct'.
Does anyone have a copy of the book that can confirm this? (Although
given that his C++ books have examples that do not compile, I'm
inclined to believe the review.)
--
Thomas Hruska
CubicleSoft President
Ph: 517-803-4197
*NEW* MyTaskFocus 1.1
Get on task. Stay on task.
http://www.CubicleSoft.com/MyTaskFocus/
Re: [c-prog] Need Help......
Boss, she is just a beginner, If in the beginning only you try to give him so much load, she will definitely run away by only looking at the content table of the book ;) On Tue, Feb 3, 2009 at 7:53 PM, Thomas Hruska thru...@cubiclesoft.comwrote: vivek tadaskar wrote: you can try c by yashavant kanetkar or the best can be c complete reference Good grief! Yashwant/Yashavant Kanetkar is one of the WORST authors in existence. Stop recommending him. He recommends/mentions the use of Turbo C, an ancient C compiler and does NOT use ANSI Standard code. You will also get zero help from this group. When you joined c-prog, you should have received an e-mail containing the group welcome message. In that message was a list of books that you should read. Just in case you missed the message, here is that list of books again and the order in which you should be reading them: Accelerated C++ by Koenig and Moo (ISBN #020170353X) Safe C++ Design Principles by Thomas Hruska The C++ Standard Library by Nicolai Josuttis (ISBN #0201379260) Effective C++ by Scott Meyers (ISBN #0201924889) More Effective C++ by Scott Meyers (ISBN #020163371X) If you are learning or looking to learn C, consider learning C++ instead. It is much more versatile and offers powerful features that C doesn't offer. If you happen to be already reading something other than the books above, seriously consider supplementing or replacing your book with the above. If you can't afford the books mentioned, Bruce Eckel offers Thinking in C++ for free from his website: http://mindview.net/Books/TICPP/ThinkingInCPP2e.html And the group owner, Thomas Hruska, has generously donated his book Safe C++ Design Principles to c-prog group members for free: http://tech.groups.yahoo.com/group/c-prog/files/Books/ Beware any C/C++ author who does not adhere closely to the ANSI C/C++ Standard. One very popular author is Yashavant Kanetkar who is the author of Let Us C. His writing may be simple to understand however his code is non-ANSI Standard. Similar great writers have shown up over the years who tell wonderful stories but don't adhere to the Standards defined by the ANSI C/C++ committees. You should also obtain at least copy of a draft copy of the ANSI C/C++ Standard. Draft copies are free and c-prog links to quite a few of them here: http://tech.groups.yahoo.com/group/c-prog/links/Standards_001012496381/ -- Thomas Hruska CubicleSoft President Ph: 517-803-4197 *NEW* MyTaskFocus 1.1 Get on task. Stay on task. http://www.CubicleSoft.com/MyTaskFocus/ -- Akter Yakub Suriya Senior Software Analyst Hyderabad. (09440711663) [Non-text portions of this message have been removed]
Re: [c-prog] Need Help......
Akter Suriya wrote: Boss, she is just a beginner, If in the beginning only you try to give him so much load, she will definitely run away by only looking at the content table of the book ;) Doesn't change the fact that Yashwant is the second worst C/C++ author in existence. Herbert Schildt having the honor of being the worst. -- Thomas Hruska CubicleSoft President Ph: 517-803-4197 *NEW* MyTaskFocus 1.1 Get on task. Stay on task. http://www.CubicleSoft.com/MyTaskFocus/
Re: [c-prog] Need Help......
Hi Priyanak! hope you and everybody there will be good and enjoying a good health.We you can use Let us C Yashwant kanitkar ... and you can also use herbert schildt's book Introduction to C and most important Programming using Turbo C so hope it might help you and one more thing try to find some tutorials of C on google it might also help you. So happy coding Nouman Naseer Bsc Spring 2005 PUCIT,Lahore www.pucit.edu.pk +923214795194 On Mon, Feb 2, 2009 at 10:34 PM, priyanka patel patelpriyank...@yahoo.co.in wrote: HiFriends i just started Balaguruswami C book.but i want to read book which have examples from basic levels with explaination so anyone can suggest me some good examples book name and if anyone has then kindly send to me.pls frds send it fast its very urgent Regards, Add more friends to your messenger and enjoy! Go to http://messenger.yahoo.com/invite/ [Non-text portions of this message have been removed] -- [Non-text portions of this message have been removed]
Re: [c-prog] Need Help......
Your KR reference is very old and like a lot of old testiment stuff for use at the DOS level. Quick C and C++ by microsoft are for use with a Windows based operating system. You badly need to go to a local dealers, teachers, or consultants to upgrade many years of development . - Original Message - From: Prince Annan Koomson To: c-prog@yahoogroups.com Sent: Tuesday, February 03, 2009 5:18 AM Subject: Re: [c-prog] Need Help.. Oh okay, for C books reading some books like Let us C and K R C language and practical C for the introduction to the world of C. Prince Annan Koomson --- On Mon, 2/2/09, priyanka patel patelpriyank...@yahoo.co.in wrote: From: priyanka patel patelpriyank...@yahoo.co.in Subject: [c-prog] Need Help.. To: c-prog@yahoogroups.com Date: Monday, February 2, 2009, 5:34 PM HiFriends i just started Balaguruswami C book.but i want to read book which have examples from basic levels with explaination so anyone can suggest me some good examples book name and if anyone has then kindly send to me.pls frds send it fast its very urgent Regards, Add more friends to your messenger and enjoy! Go to http://messenger. yahoo..com/ invite/ [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] -- Internal Virus Database is out of date. Checked by AVG - http://www.avg.com Version: 8.0.176 / Virus Database: 270.9.17/1847 - Release Date: 12/13/2008 4:56 PM [Non-text portions of this message have been removed]
Re: [c-prog] Need Help......
On Tue 2009-02-03 16:48:23 UTC-0500, Fred Hoeldtke (e...@verizon.net) wrote: Quick C and C++ by microsoft are for use with a Windows based operating system. Microsoft Quick C is 20 years old and was for building DOS programs. There was a version for Windows 3.x but it was not very popular. http://en.wikipedia.org/wiki/QuickC Perhaps you meant Microsoft Visual C++.
Re: [c-prog] need help please
On Mon, Jan 19, 2009 at 4:20 PM, comm_eng_amr comm_eng_...@yahoo.com wrote: Hi everybody i'm starting my first program using C#2005 the program is simply a database storing my eBooks the problems i faced are so easy but as a beginner are hard 1- i need to create a class to initialize the ADO.NET dataset,adapter,... and how to use it in the program 2- i wanna build another project in the program to serialize the ebooks to and from the database ,then how to inialize these projects inside the main program This isn't a C# list, but for C and C++. These languages aren't much related (C# is closer to Java and VB than C or C++, as far as I can tell). This list would be more appropriate: http://tech.groups.yahoo.com/group/dot_net_community -- Brett In the rhythm of music a secret is hidden; If I were to divulge it, it would overturn the world. -- Jelaleddin Rumi
Re: [c-prog] need help please
You've told us what you want to do. What do you want to get out of telling us your goals? It's great to have them, but we need something concrete if you want help. Thanks, Tyler Littlefield http://tysdomain.com - Original Message - From: comm_eng_amr To: c-prog@yahoogroups.com Sent: Monday, January 19, 2009 2:20 PM Subject: [c-prog] need help please Hi everybody i'm starting my first program using C#2005 the program is simply a database storing my eBooks the problems i faced are so easy but as a beginner are hard 1- i need to create a class to initialize the ADO.NET dataset,adapter,... and how to use it in the program 2- i wanna build another project in the program to serialize the ebooks to and from the database ,then how to inialize these projects inside the main program thanx alot __ NOD32 3778 (20090119) Information __ This message was checked by NOD32 antivirus system. http://www.eset.com [Non-text portions of this message have been removed]
Re: [c-prog] need help please
comm_eng_amr wrote: Hi everybody i'm starting my first program using C#2005 the program is simply a database storing my eBooks the problems i faced are so easy but as a beginner are hard 1- i need to create a class to initialize the ADO.NET dataset,adapter,... and how to use it in the program 2- i wanna build another project in the program to serialize the ebooks to and from the database ,then how to inialize these projects inside the main program thanx alot #1 - ADO is overrated and ties you to a specific platform (Windows). Look at ODBC instead. #2 - That's an implementation detail that is left up to you. However, storing binary data in a database is, IMO, a bad idea. You will bloat the database with unnecessary data making row sizes quite large, have to use blobs, and you won't be able to script against it. Why do you need to implement this in C#? Any time you start fiddling with databases is, IMO, the time to look at a scripting language as an option. You may end up decided to go the compiled route (for performance reasons), but if it is quick-n-dirty, then a scripting language is probably a better route - plus you usually get the bonus of a web app. out of the deal. Use the right tool for the job. -- Thomas Hruska CubicleSoft President Ph: 517-803-4197 *NEW* MyTaskFocus 1.1 Get on task. Stay on task. http://www.CubicleSoft.com/MyTaskFocus/
Re: [c-prog] need help
how can we use pointers on a two dimensional array please explain Can you be more specific? You can find general information here: http://www.google.com/search?q=pointer+%22two+dimensional+array%22+c David
Re: [c-prog] need help
- Original Message - From: David Hamill [EMAIL PROTECTED] To: c-prog@yahoogroups.com Sent: Tuesday, November 18, 2008 8:53 AM Subject: Re: [c-prog] need help how can we use pointers on a two dimensional array please explain Can you be more specific? What are you trying to do? Bill
Re: [c-prog] Need help
s_zhbjvd wrote: And one more point they must be made by using two dimensional arrays. This appears to be a homework problem. Most homework style problems are supplied by educational institutions to be done by the individual. Educational institutions usually provide resources for struggling students to help them through homework problems which the student is having difficulty with. If you got this problem from an educational institution, please consider using that valuable support resource. The alternative is that someone here could provide you a solution. However, if you pass it off as your own, that is called plagiarism. The punishment for plagiarism is usually a failing grade or expulsion depending on the educational institution you attend. It is NOT embarrassing to ask for help nor will it cause any grade deduction when using the official methods of help provided by educational institutions. c-prog demands excellence from its members. You won't learn anything if anyone simply provides you with a solution. In fact, you will likely become dependent upon the group and a burden to other people should you get a programming job. Today's business world demands self-reliance. If you wish to receive an answer to your question, you need to show us what you have done so far. Show us that you have made an effort - source code, Google queries, something, anything. If you are truly stumped, then describe in detail what exactly you don't understand. -- Thomas Hruska CubicleSoft President Ph: 517-803-4197 *NEW* MyTaskFocus 1.1 Get on task. Stay on task. http://www.CubicleSoft.com/MyTaskFocus/
Re: [c-prog] Need Help
Can anybody of you can help me in making a program of multiplying two matrices of 3X3 order.I will be very thankful. And one more point they must be made by using two dimensional arrays. This is not a difficult problem if you understand what matrix multiplication is. So have a go at it yourself. If you run into problems, show us your code and you may get helpful comments. David
Re: [c-prog] Need Help
It would have taken you lesser work ( and of course hearing lesser `words` from the group ) , if you had searched for matrix multiplication in C on www.google.com ,.. then if you had any problems understanding how it is implemented in C or if you had some doubts , well then the group would have been a good place to start with , ACTUALLY YOU CAN STILL DO WHAT I HAVE MENTIONED ABOVE . WE WILL STILL BE READY TO HELP IF YOU FACE ANY PROBLEMS WITH THE CODE ... BUT FIRST MAKE AN EFFORT On Sat, 2008-11-15 at 16:49 +, s_zhbjvd wrote: hello how are you all ? I am fine , hey Can anybody of you can help me in making a program of multiplying two matrices of 3X3 order.I will be very thankful. -- http://satish.playdrupal.com
Re: [c-prog] need help
osho ratha wrote: hello friends i need your guidance . how to get print out and what is the command or coding to get a hard copy print out can you give me a example coding. thanking you. Printing is an OS-specific task. You generally have to describe what you want to print either through various APIs or use an external program. There is no single magical way to print especially when you start considering the differences between a printer and a monitor. -- Thomas Hruska CubicleSoft President Ph: 517-803-4197 *NEW* MyTaskFocus 1.1 Get on task. Stay on task. http://www.CubicleSoft.com/MyTaskFocus/
Re: [c-prog] need help
Could you be specific about what you're looking for? -nag. On Sat, Aug 2, 2008 at 5:45 PM, osho ratha [EMAIL PROTECTED] wrote: hello friends, can i get the details of basic mathamatical calculation which is used to write codings and building programmes if there is any pdf file sent or give me sugession of books. thanking you Be the first one to try the new Messenger 9 Beta! Go to http://in.messenger.yahoo.com/win/ [Non-text portions of this message have been removed] -- Cheers, -nag. [Non-text portions of this message have been removed]
Re: [c-prog] need help
On Sat 2008-08-02 17:45:26 UTC+0530, osho ratha ([EMAIL PROTECTED]) wrote: can i get the details of basic mathamatical calculation which is used to write codings and building programmes algorithms if there is any pdf file sent or give me sugession of books. The Art of Computer Programming by Donald Knuth.
Re: [c-prog] [Need help] Want code for the project Urgent plzzz help me soon
What is this for? A computer worm is the first thing that comes to my mind. Ad Hoc networks are dangerous: Don't touch them with a 10-foot pole. Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ
Re: [c-prog] Need Help
On Wed, Apr 23, 2008 at 1:23 PM, ~Rick [EMAIL PROTECTED] wrote: Embedding Word/Excel uses a feature of those two products called OLE (Object Link Exchange). Get ready to learn more than you'll wish to ever know about COM (Component Object Model). I always thought OLE was Object Linking and Embedding. Yeah, I've never heard any different either. :-) -- Brett In the rhythm of music a secret is hidden; If I were to divulge it, it would overturn the world. -- Jelaleddin Rumi
Re: [c-prog] Need Help
Brett McCoy wrote: On Wed, Apr 23, 2008 at 1:23 PM, ~Rick [EMAIL PROTECTED] wrote: Embedding Word/Excel uses a feature of those two products called OLE (Object Link Exchange). Get ready to learn more than you'll wish to ever know about COM (Component Object Model). I always thought OLE was Object Linking and Embedding. Yeah, I've never heard any different either. :-) -- Brett Huh. You're right. That's weird. I must have muddled OLE and DDE together and come up with my own acronym expansion. -- Thomas Hruska CubicleSoft President Ph: 517-803-4197 *NEW* MyTaskFocus 1.1 Get on task. Stay on task. http://www.CubicleSoft.com/MyTaskFocus/
Re: [c-prog] Need help in converting HANDLE to HWND
On Thu, Apr 3, 2008 at 6:47 AM, Gopi Krishna Komanduri [EMAIL PROTECTED] wrote: WM_COPYDATA . http://www.codersource.net/mfc_ipc_wm_copydata.aspx -- PJH A man in a shellsuit goes into a posh furriers. He says to the shop assistant I want a coat. The shop assistant, barely concealing her disdain, asks What fur? The man replies Fur ma girlfriend.
Re: [c-prog] need help quickly please
On Wed, Mar 5, 2008 at 10:56 AM, zack_of_egypt [EMAIL PROTECTED] wrote: I'm a first year student at Cairo university , thanks for ur help I need to a code takes an operation an calculate it (op1 operation op2)a the prog showa the result then keeps it for the next operation the user enter the second operation ( operation op3)and the prog keep it again for the next operation.etc please I need this code to know how did u do it, becuz I tried to write it but it doesn't work I couldn't do it , I've just started learning it thanks ; please reply quickly We don't do homework for people. Show us what you have written so far. -- Brett In the rhythm of music a secret is hidden; If I were to divulge it, it would overturn the world. -- Jelaleddin Rumi
Re: [c-prog] need help quickly please
On Wed, Mar 5, 2008 at 3:56 PM, zack_of_egypt [EMAIL PROTECTED] wrote: [...] please I need this code to know how did u do it, becuz I tried to write it but it doesn't work I couldn't do it , I've just started learning it thanks ; please reply quickly Please see http://home.att.net/~jackklein/ctips01.html#homework -- PJH http://shabbleland.myminicity.com
Re: [c-prog] need help quickly please
If you need a quick response you have chosen the perfect way to get it, however you might not get the kind of response that you are looking for. c-prog@yahoogroups.com wrote: I'm a first year student at Cairo university , thanks for ur help I need to a code takes an operation an calculate it (op1 operation op2)a the prog showa the result then keeps it for the next operation the user enter the second operation ( operation op3)and the prog keep it again for the next operation.etc please I need this code to know how did u do it, becuz I tried to write it but it doesn't work I couldn't do it , I've just started learning it thanks ; please reply quickly
[Fwd: Re: [c-prog] need help quickly please (I AM ALIZEE)]
Alizee,
You need to send this to the cprog list and not to me directly.
Describe the problem that you are having.
Original Message
Subject: Re: [c-prog] need help quickly please (I AM ALIZEE)
Date: Wed, 05 Mar 2008 14:53:14 -0500
From: ali senator [EMAIL PROTECTED]
To: Jim Dougherty [EMAIL PROTECTED]
This is calculator for fraction
i hope it will help you..
Never
miss a thing. [ http://us.rd.yahoo.com/evt=51438/*http://www.yahoo.com/r/hs ]
Make Yahoo your homepage.#include iostream.h
#include conio.h
struct calculate{
int up;
int down;
char ch;
};
calculate sum(calculate,calculate);
calculate multiple(calculate,calculate);
calculate divid(calculate,calculate);
calculate mines(calculate,calculate);
main(){
clrscr();
const int size=3;
calculate array[size];
array[0].ch='/';
array[2].ch='/';
coutPlease Enter a from (a/b) : ;
cinarray[0].up;
coutPlease Enter b from (a/b) : ;
cinarray[0].down;
coutPlease Enter c from (c/d) : ;
cinarray[2].up;
coutPlease Enter d from (c/d) : ;
cinarray[2].down;
coutPlease Enter (+,*,/,-) : ;
cinarray[1].ch;
switch(array[1].ch){
case '+':
array[1]=sum(array[0],array[2]);
coutResult Sum Is : array[1].uparray[1].charray[1].down;
break;
case '*':
array[1]=multiple(array[0],array[2]);
coutResult Multiple Is : array[1].uparray[1].charray[1].down;
break;
case '/':
array[1]=divid(array[0],array[2]);
coutResult Divid Is : array[1].uparray[1].charray[1].down;
break;
case '-':
array[1]=mines(array[0],array[2]);
coutResult mines Is : array[1].uparray[1].charray[1].down;
break;
default:
cout!!! WRONG !!!\a;
}
getch();
return 0;
}
int gcd(int unsigned a,int unsigned b){
int max=a;
int min=b;
if (bmax)
{
max=b;
min=a;
}
if (max%min==0)
return min;
for (int i=min;i0;i--){
if(max%i==0 min%i==0)
return i;
}
}
calculate sum(calculate a,calculate b){
calculate c;
c.up=(a.up*b.down)+(a.down*b.up);
c.down=(b.down)*(a.down);
int G=gcd(c.up,c.down);
c.up/=G;
c.down/=G;
c.ch='/';
return c;
}
calculate multiple(calculate a,calculate b){
calculate c;
c.up=(a.up*b.up);
c.down=(b.down)*(a.down);
int G=gcd(c.up,c.down);
c.up/=G;
c.down/=G;
c.ch='/';
return c;
}
calculate divid(calculate a,calculate b){
calculate c;
c.up=(a.up*b.down);
c.down=(b.up)*(a.down);
int G=gcd(c.up,c.down);
c.up/=G;
c.down/=G;
c.ch='/';
return c;
}
calculate mines(calculate a,calculate b){
calculate c;
c.up=(a.up*b.down)-(a.down*b.up);
c.down=(b.down)*(a.down);
int G=gcd(c.up,c.down);
c.up/=G;
c.down/=G;
c.ch='/';
return c;
}
Re: [c-prog] Need help sorting an array of structures
At Friday 1/25/2008 07:55 PM, you wrote:
--- ~Rick [EMAIL PROTECTED] escreveu:
I am populating a number of entries and want to sort on the field
linedata.transferPath. I'm using qsort and have built a comparator
function but cannot figure out how to specify the transferPath
element.
But, I want to sort on an element within a structure. I've tried, and
it fails. How can I specify the element to the comparator? (Darn
pointers!)? I haven't worked with qsort or comparator functions before.
int compareEntry (const void * a, const void * b)
{
char *a1= (char *)a;
char *b1= (char *)b;
char *a2= a1.transferPath;
char *b2= b1.transferPath;
return (strcmp((char *)a2, (char *)b2));
}
The right code is:
int compareEntry (const void * a, const void * b)
{
struct ENTRY *e1 = (struct ENTRY*)a;
struct ENTRY *e2 = (struct ENTRY*)b;
char *c1 = e1-transferPath;
char *c2 = e2-transferPath;
return (strcmp(c1, c2));
}
You may use typedef struct to do not need to type struct before every
ENTRY.
Thank you. This seems to have done the trick. I
just couldn't seem to get my thoughts focused enough to get this correct.
I had tried the struct-element as well as
struct.element formats but couldn't seem to get the right combination.
Thanks again.
~Rick
Abra sua conta no Yahoo! Mail, o único
sem limite de espaço para armazenamento!
http://br.mail.yahoo.com/
To unsubscribe, send a blank message to
mailto:[EMAIL PROTECTED].
Yahoo! Groups Links
Re: [c-prog] Need help sorting an array of structures
At Friday 1/25/2008 07:49 PM, you wrote: ~Rick wrote: All, I have a structure defined below (I've eliminated some of the elements because it's big). It's setup to be part of a single linked list but at the moment I have an array built: struct ENTRYlinedata[MAX_ENTS]; snip Use linedata with qsort(). Then, inside the comparison function, typecast to the structure and extract the element(s) you want to compare and go from there. Thomas, I did use linedata in the qsort call. My problem was trying to get the proper typecasts in the comparison function. My brain wasn't getting it. It works now. Thanks, ~Rick -- Thomas Hruska CubicleSoft President Ph: 517-803-4197 *NEW* MyTaskFocus 1.1 Get on task. Stay on task. http://www.CubicleSoft.com/MyTaskFocus/ To unsubscribe, send a blank message to mailto:[EMAIL PROTECTED]. Yahoo! Groups Links
Re: [c-prog] Need help sorting an array of structures
~Rick wrote: All, I have a structure defined below (I've eliminated some of the elements because it's big). It's setup to be part of a single linked list but at the moment I have an array built: struct ENTRYlinedata[MAX_ENTS]; snip Use linedata with qsort(). Then, inside the comparison function, typecast to the structure and extract the element(s) you want to compare and go from there. -- Thomas Hruska CubicleSoft President Ph: 517-803-4197 *NEW* MyTaskFocus 1.1 Get on task. Stay on task. http://www.CubicleSoft.com/MyTaskFocus/
Re: [c-prog] Need help sorting an array of structures
--- ~Rick [EMAIL PROTECTED] escreveu:
I am populating a number of entries and want to sort on the field
linedata.transferPath. I'm using qsort and have built a comparator
function but cannot figure out how to specify the transferPath
element.
But, I want to sort on an element within a structure. I've tried, and
it fails. How can I specify the element to the comparator? (Darn
pointers!)? I haven't worked with qsort or comparator functions before.
int compareEntry (const void * a, const void * b)
{
char *a1= (char *)a;
char *b1= (char *)b;
char *a2= a1.transferPath;
char *b2= b1.transferPath;
return (strcmp((char *)a2, (char *)b2));
}
The right code is:
int compareEntry (const void * a, const void * b)
{
struct ENTRY *e1 = (struct ENTRY*)a;
struct ENTRY *e2 = (struct ENTRY*)b;
char *c1 = e1-transferPath;
char *c2 = e2-transferPath;
return (strcmp(c1, c2));
}
You may use typedef struct to do not need to type struct before every
ENTRY.
Abra sua conta no Yahoo! Mail, o único sem limite de espaço para
armazenamento!
http://br.mail.yahoo.com/
Re: [c-prog] NEED HELP
sugam vora wrote: dear freinds, I need C source code for MULTIPLEXER pls make it available . . . Since this doesn't really tell us what you want to do, I refer you to the following Wikipedia article: http://en.wikipedia.org/wiki/Multiplexer Clarify what you want to do. -- Thomas Hruska CubicleSoft President Ph: 517-803-4197 *NEW* MyTaskFocus 1.1 Get on task. Stay on task. http://www.CubicleSoft.com/MyTaskFocus/
Re: [c-prog] Need help to list it as range.
On Dec 28, 2007 6:06 AM, Nehru [EMAIL PROTECTED] wrote: Dear all, I'm a beginner in C. I've an array which has a set of elements say for example 23,24,25,34,35,36,37,44,6,7,8,9. so i should get the output as 23-25,34-37,44-44,6-9. I tried a little. but i don't know to bring it in the program. Can anyone help me? Print first number. While (more numbers) if next number != last number+1 print - + last number + , + this number end if last number = number before + 1 print - + last number else print last number end There'll be a few cases where this algorithm won't work, but it'll give you an idea of how to start. -- PJH http://shabbleland.myminicity.com/
Re: [c-prog] Need help tracking down SegFault
On Sat, 2007-12-15 at 21:33 -0700, Thomas Hruska wrote: Michael Sullivan wrote: On Sat, 2007-12-15 at 19:53 +, ed wrote: Michael Sullivan wrote: OK. I need help tracking down a segmentation fault. The problem is that even with the backtrace information from gdb, I'm still not exactly sure where it is occurring. Here's the backtrace info: Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x4000 (LWP 31519)] 0xb7f2d69c in do_lookup_x () from /lib/ld-linux.so.2 (gdb) backtrace #0 0xb7f2d69c in do_lookup_x () from /lib/ld-linux.so.2 #1 0xb7f2da3e in _dl_lookup_symbol_x () from /lib/ld-linux.so.2 #2 0xb7f317c4 in _dl_fixup () from /lib/ld-linux.so.2 #3 0xb7f36db0 in _dl_runtime_resolve () from /lib/ld-linux.so.2 #4 0x08049bd3 in battle::battle () #5 0x0804a09f in main () It looks to me like something in my battle constructor is causing it, but the battle constructor creates four Allies, which makes calls to Character and the whole thing's a mess. I don't even know what code to post here. I've got the full source code of everything the project currently uses at http://www.espersunited.com/~michael/needhelp.txt . Please help, if you can. If there's any other information I can provide that would be useful, please let me know... Set a break point on the constructor and step in. [Non-text portions of this message have been removed] Can anyone inform me on how to do that with gdb? Here's my attempt: [EMAIL PROTECTED] ourrpg $ gdb battle GNU gdb 6.7.1 Copyright (C) 2007 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type show copying and show warranty for details. This GDB was configured as i686-pc-linux-gnu... Using host libthread_db library /lib/libthread_db.so.1. (gdb) b battle::battle() Breakpoint 1 at 0x804a3a6 (gdb) r Starting program: /home/michael/ourrpg/battle [Thread debugging using libthread_db enabled] [New Thread 0x4000 (LWP 31855)] Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x4000 (LWP 31855)] 0xb7fd969c in do_lookup_x () from /lib/ld-linux.so.2 (gdb) You should seriously consider using an IDE such as KDevelop: http://www.kdevelop.org/ KDevelop uses gdb behind the scenes for debugging without displaying the ugly nitty-gritty details. However, while gdb works fine for C, VC++ has the far superior C++ debugger. Even then, using command-line gdb isn't really all that useful. Use tools (such as KDevelop) that help you write better code faster even if they aren't as pure or noble as the command-line. I may take a look at the source code later. -- Thomas Hruska CubicleSoft President Ph: 517-803-4197 I used to (try to) use KDevelop a lot when I first started using Linux. I could never get simple Hello World type programs to compile. I try it again every few years, and it still doesn't work. That's why I don't use KDevelop.
Re: [c-prog] Need help tracking down SegFault
Michael Sullivan wrote: OK. I need help tracking down a segmentation fault. The problem is that even with the backtrace information from gdb, I'm still not exactly sure where it is occurring. Here's the backtrace info: Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x4000 (LWP 31519)] 0xb7f2d69c in do_lookup_x () from /lib/ld-linux.so.2 (gdb) backtrace #0 0xb7f2d69c in do_lookup_x () from /lib/ld-linux.so.2 #1 0xb7f2da3e in _dl_lookup_symbol_x () from /lib/ld-linux.so.2 #2 0xb7f317c4 in _dl_fixup () from /lib/ld-linux.so.2 #3 0xb7f36db0 in _dl_runtime_resolve () from /lib/ld-linux.so.2 #4 0x08049bd3 in battle::battle () #5 0x0804a09f in main () It looks to me like something in my battle constructor is causing it, but the battle constructor creates four Allies, which makes calls to Character and the whole thing's a mess. I don't even know what code to post here. I've got the full source code of everything the project currently uses at http://www.espersunited.com/~michael/needhelp.txt . Please help, if you can. If there's any other information I can provide that would be useful, please let me know... I took a look at the source. IMO, you are doing WAY too much in the constructors. A _LOT_ of stuff can fail. Library calls that can fail should be reserved for a call to your own initialization function AFTER construction. I like to use Init(). Constructors should be fairly lightweight (just initialize variables). battle mybattle = battle(); That line is unnecessary and is probably the cause of your problems. Just do: battle mybattle; The code before was creating a battle structure (mybattle). Then it created a second battle structure (temporary object). Then it called the default assignment operator, which did a surface copy of the temporary object to mybattle. Then the temporary object was deleted (destructor called) which made all the mybattle pointers _invalid_ because they are just ordinary pointers _copied_ from the temporary object. Attempting to use the invalid pointers is probably what caused the application to crash. I highly recommend reading Safe C++ Design Principles. Particularly the sections involving smart pointers. Pretty sure I included source code to a fully functional smart pointer. The C++ compiler is smart enough to know how to do a deep copy BUT only if every single variable in the class is either a C++ class, template, or a base data type other than a pointer and all those know how to do deep copies as well. I'd like to take this time to point out that you've got your graphics engine (including initialization and shutdown) tied directly into a class that apparently will manage battles. These are, IMO, two separate logic units that should be treated as such. -- Thomas Hruska CubicleSoft President Ph: 517-803-4197 *NEW* MyTaskFocus 1.1 Get on task. Stay on task. http://www.CubicleSoft.com/MyTaskFocus/
Re: [c-prog] Need help tracking down SegFault
Michael Sullivan wrote: I used to (try to) use KDevelop a lot when I first started using Linux. I could never get simple Hello World type programs to compile. I try it again every few years, and it still doesn't work. That's why I don't use KDevelop. Given that it is a very popular development tool on the Linux platform should be an indicator of pilot error. You could always use their web forum to ask questions: http://www.kdevelop.org/phorum5/ -- Thomas Hruska CubicleSoft President Ph: 517-803-4197 *NEW* MyTaskFocus 1.1 Get on task. Stay on task. http://www.CubicleSoft.com/MyTaskFocus/
Re: [c-prog] Need help tracking down SegFault
On Sun, 2007-12-16 at 06:34 -0700, Thomas Hruska wrote: Michael Sullivan wrote: OK. I need help tracking down a segmentation fault. The problem is that even with the backtrace information from gdb, I'm still not exactly sure where it is occurring. Here's the backtrace info: Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x4000 (LWP 31519)] 0xb7f2d69c in do_lookup_x () from /lib/ld-linux.so.2 (gdb) backtrace #0 0xb7f2d69c in do_lookup_x () from /lib/ld-linux.so.2 #1 0xb7f2da3e in _dl_lookup_symbol_x () from /lib/ld-linux.so.2 #2 0xb7f317c4 in _dl_fixup () from /lib/ld-linux.so.2 #3 0xb7f36db0 in _dl_runtime_resolve () from /lib/ld-linux.so.2 #4 0x08049bd3 in battle::battle () #5 0x0804a09f in main () It looks to me like something in my battle constructor is causing it, but the battle constructor creates four Allies, which makes calls to Character and the whole thing's a mess. I don't even know what code to post here. I've got the full source code of everything the project currently uses at http://www.espersunited.com/~michael/needhelp.txt . Please help, if you can. If there's any other information I can provide that would be useful, please let me know... I took a look at the source. IMO, you are doing WAY too much in the constructors. A _LOT_ of stuff can fail. Library calls that can fail should be reserved for a call to your own initialization function AFTER construction. I like to use Init(). Constructors should be fairly lightweight (just initialize variables). battle mybattle = battle(); That line is unnecessary and is probably the cause of your problems. Just do: battle mybattle; The code before was creating a battle structure (mybattle). Then it created a second battle structure (temporary object). Then it called the default assignment operator, which did a surface copy of the temporary object to mybattle. Then the temporary object was deleted (destructor called) which made all the mybattle pointers _invalid_ because they are just ordinary pointers _copied_ from the temporary object. Attempting to use the invalid pointers is probably what caused the application to crash. I highly recommend reading Safe C++ Design Principles. Particularly the sections involving smart pointers. Pretty sure I included source code to a fully functional smart pointer. The C++ compiler is smart enough to know how to do a deep copy BUT only if every single variable in the class is either a C++ class, template, or a base data type other than a pointer and all those know how to do deep copies as well. I was poking around the Files section yesterday and noticed that the Safe C++ book is still an .exe. I'd like to take this time to point out that you've got your graphics engine (including initialization and shutdown) tied directly into a class that apparently will manage battles. These are, IMO, two separate logic units that should be treated as such. -- Thomas Hruska CubicleSoft President Ph: 517-803-4197 *NEW* MyTaskFocus 1.1 Get on task. Stay on task. http://www.CubicleSoft.com/MyTaskFocus/
Re: [c-prog] Need help tracking down SegFault
Michael Sullivan wrote: I was poking around the Files section yesterday and noticed that the Safe C++ book is still an .exe. That would be because Second Edition hasn't been released yet. -- Thomas Hruska CubicleSoft President Ph: 517-803-4197 *NEW* MyTaskFocus 1.1 Get on task. Stay on task. http://www.CubicleSoft.com/MyTaskFocus/
Re: [c-prog] Need help tracking down SegFault
On Dec 16, 2007 9:03 AM, Michael Sullivan [EMAIL PROTECTED] wrote: I was poking around the Files section yesterday and noticed that the Safe C++ book is still an .exe. It can be installed with Wine. It's only a PDF so once it's installed it can be read with the Linux version of Acrobat (or any other PDF reader). -- Brett In the rhythm of music a secret is hidden; If I were to divulge it, it would overturn the world. -- Jelaleddin Rumi
Re: [c-prog] Need help tracking down SegFault
Thomas Hruska wrote: Michael Sullivan wrote: On Sat, 2007-12-15 at 19:53 +, ed wrote: Michael Sullivan wrote: OK. I need help tracking down a segmentation fault. The problem is that even with the backtrace information from gdb, I'm still not exactly sure where it is occurring. Here's the backtrace info: Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x4000 (LWP 31519)] 0xb7f2d69c in do_lookup_x () from /lib/ld-linux.so.2 (gdb) backtrace #0 0xb7f2d69c in do_lookup_x () from /lib/ld-linux.so.2 #1 0xb7f2da3e in _dl_lookup_symbol_x () from /lib/ld-linux.so.2 #2 0xb7f317c4 in _dl_fixup () from /lib/ld-linux.so.2 #3 0xb7f36db0 in _dl_runtime_resolve () from /lib/ld-linux.so.2 #4 0x08049bd3 in battle::battle () #5 0x0804a09f in main () It looks to me like something in my battle constructor is causing it, but the battle constructor creates four Allies, which makes calls to Character and the whole thing's a mess. I don't even know what code to post here. I've got the full source code of everything the project currently uses at http://www.espersunited.com/~michael/needhelp.txt . Please help, if you can. If there's any other information I can provide that would be useful, please let me know... Set a break point on the constructor and step in. [Non-text portions of this message have been removed] Can anyone inform me on how to do that with gdb? Here's my attempt: [EMAIL PROTECTED] ourrpg $ gdb battle GNU gdb 6.7.1 Copyright (C) 2007 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type show copying and show warranty for details. This GDB was configured as i686-pc-linux-gnu... Using host libthread_db library /lib/libthread_db.so.1. (gdb) b battle::battle() Breakpoint 1 at 0x804a3a6 (gdb) r Starting program: /home/michael/ourrpg/battle [Thread debugging using libthread_db enabled] [New Thread 0x4000 (LWP 31855)] Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x4000 (LWP 31855)] 0xb7fd969c in do_lookup_x () from /lib/ld-linux.so.2 (gdb) You should seriously consider using an IDE such as KDevelop: http://www.kdevelop.org/ KDevelop uses gdb behind the scenes for debugging without displaying the ugly nitty-gritty details. However, while gdb works fine for C, VC++ has the far superior C++ debugger. Even then, using command-line gdb isn't really all that useful. Use tools (such as KDevelop) that help you write better code faster even if they aren't as pure or noble as the command-line. I may take a look at the source code later. Bah! nvi, gcc and gdb for eva. Seriously, relying on kdevelop is not a good way to start out. The last thing the world needs is another drag and drop programmer. When things go tits up, success favours those who know what they're doing. A little knowledge of things like buffer over flows saves us many exploits. [Non-text portions of this message have been removed]
Re: [c-prog] Need help tracking down SegFault
ed wrote: Thomas Hruska wrote: You should seriously consider using an IDE such as KDevelop: http://www.kdevelop.org/ KDevelop uses gdb behind the scenes for debugging without displaying the ugly nitty-gritty details. However, while gdb works fine for C, VC++ has the far superior C++ debugger. Even then, using command-line gdb isn't really all that useful. Use tools (such as KDevelop) that help you write better code faster even if they aren't as pure or noble as the command-line. I may take a look at the source code later. Bah! nvi, gcc and gdb for eva. Seriously, relying on kdevelop is not a good way to start out. The last thing the world needs is another drag and drop programmer. When things go tits up, success favours those who know what they're doing. I disagree wholeheartedly. Using the command-line to build software is good for exactly one type of software program: A hi there program to make sure everything is in working order. Knowing _how_ to use the command-line compiler is good enough. After that, head off to the IDE and let it manage your software projects, using Google to hunt down weird problems. A little knowledge of things like buffer over flows saves us many exploits. That has absolutely nothing to do with using an IDE or the command-line. There is no correlation. Bad programmers use gcc (or IDEs) just as well as good programmers. -- Thomas Hruska CubicleSoft President Ph: 517-803-4197 *NEW* MyTaskFocus 1.1 Get on task. Stay on task. http://www.CubicleSoft.com/MyTaskFocus/
Re: [c-prog] Need help tracking down SegFault
On Sun, 2007-12-16 at 09:02 -0700, Thomas Hruska wrote: ed wrote: Thomas Hruska wrote: You should seriously consider using an IDE such as KDevelop: http://www.kdevelop.org/ KDevelop uses gdb behind the scenes for debugging without displaying the ugly nitty-gritty details. However, while gdb works fine for C, VC ++ has the far superior C++ debugger. Even then, using command-line gdb isn't really all that useful. Use tools (such as KDevelop) that help you write better code faster even if they aren't as pure or noble as the command-line. I may take a look at the source code later. Bah! nvi, gcc and gdb for eva. Seriously, relying on kdevelop is not a good way to start out. The last thing the world needs is another drag and drop programmer. When things go tits up, success favours those who know what they're doing. I disagree wholeheartedly. Using the command-line to build software is good for exactly one type of software program: A hi there program to make sure everything is in working order. Knowing _how_ to use the command-line compiler is good enough. After that, head off to the IDE and let it manage your software projects, using Google to hunt down weird problems. A little knowledge of things like buffer over flows saves us many exploits. That has absolutely nothing to do with using an IDE or the command-line. There is no correlation. Bad programmers use gcc (or IDEs) just as well as good programmers. Well, all I know is that I started a new KDevelop project (simple SDL), created empty files and copied my original source code into the empty files (I don't want KDevelop messing with my original files.) I then asked to build the project. It generated about ten kazillion errors. Things like #include statement nested too far in, whatever that means. The project built just fine with my original files on the command line. It creates a battle executable. When I try to debug it though, I ask for a breakpoint on battle::battle() and it claims to comply, but when I run it, it goes right past without stopping. When I ask for a breakpoint on battle.cpp:13 it claims that it doesn't know about battle.cpp. And when I try to issue a list command, it says something about files that don't exist. Specifically, temporary portage build files. I know that's a Gentoo-specific problem, but I can't continue working on this project until I track down this SegFault...
Re: [c-prog] Need help tracking down SegFault
Michael Sullivan wrote: On Sun, 2007-12-16 at 09:02 -0700, Thomas Hruska wrote: ed wrote: Thomas Hruska wrote: You should seriously consider using an IDE such as KDevelop: http://www.kdevelop.org/ KDevelop uses gdb behind the scenes for debugging without displaying the ugly nitty-gritty details. However, while gdb works fine for C, VC ++ has the far superior C++ debugger. Even then, using command-line gdb isn't really all that useful. Use tools (such as KDevelop) that help you write better code faster even if they aren't as pure or noble as the command-line. I may take a look at the source code later. Bah! nvi, gcc and gdb for eva. Seriously, relying on kdevelop is not a good way to start out. The last thing the world needs is another drag and drop programmer. When things go tits up, success favours those who know what they're doing. I disagree wholeheartedly. Using the command-line to build software is good for exactly one type of software program: A hi there program to make sure everything is in working order. Knowing _how_ to use the command-line compiler is good enough. After that, head off to the IDE and let it manage your software projects, using Google to hunt down weird problems. A little knowledge of things like buffer over flows saves us many exploits. That has absolutely nothing to do with using an IDE or the command-line. There is no correlation. Bad programmers use gcc (or IDEs) just as well as good programmers. Well, all I know is that I started a new KDevelop project (simple SDL), created empty files and copied my original source code into the empty files (I don't want KDevelop messing with my original files.) I then asked to build the project. It generated about ten kazillion errors. Things like #include statement nested too far in, whatever that means. Do something simple first with the IDE and get that working. The KDevelop website has step-by-step tutorials to get you up and running. Don't just dump in a project that doesn't work properly in the first place and expect it to work when you don't know the first thing about the IDE. If you've never _used_ an IDE before, it takes a bit to get acquainted with but is, IMO, worth the effort. And KDevelop isn't the only IDE out there for Linux. Some people prefer others like Anjuta. Just find one with a good debugging interface. IMO, a game is not a good first C++ project to tackle while learning the language. Games require..finesse. The project built just fine with my original files on the command line. It creates a battle executable. When I try to debug it though, I ask Clarify your pronouns. It being which - KDevelop executing gcc or command-line gcc? for a breakpoint on battle::battle() and it claims to comply, but when I It being which - KDevelop or gdb? As I said before, gdb works fine with C code but apparently doesn't work so well with C++ (VC++ has the superior debugger when it comes to stepping through C++ code). KDevelop uses gdb behind the scenes... run it, it goes right past without stopping. When I ask for a breakpoint on battle.cpp:13 it claims that it doesn't know about battle.cpp. And when I try to issue a list command, it says something about files that don't exist. Specifically, temporary portage build files. I know that's a Gentoo-specific problem, but I can't continue working on this project until I track down this SegFault... KDevelop setup-specific issues should probably be directed at their web forum. And you should really go through their tutorials. A pain, I know, but probably necessary. Either that or find someone you know who also knows how to use KDevelop to show you the ropes. I gave you a pretty good starting point to look into a few posts back that would have been a major cause of crashing issues. Did you try the suggested fix? -- Thomas Hruska CubicleSoft President Ph: 517-803-4197 *NEW* MyTaskFocus 1.1 Get on task. Stay on task. http://www.CubicleSoft.com/MyTaskFocus/
Re: [c-prog] Need help tracking down SegFault
On Sun, 2007-12-16 at 12:59 -0700, Thomas Hruska wrote: Michael Sullivan wrote: On Sun, 2007-12-16 at 09:02 -0700, Thomas Hruska wrote: ed wrote: Thomas Hruska wrote: You should seriously consider using an IDE such as KDevelop: http://www.kdevelop.org/ KDevelop uses gdb behind the scenes for debugging without displaying the ugly nitty-gritty details. However, while gdb works fine for C, VC ++ has the far superior C++ debugger. Even then, using command-line gdb isn't really all that useful. Use tools (such as KDevelop) that help you write better code faster even if they aren't as pure or noble as the command-line. I may take a look at the source code later. Bah! nvi, gcc and gdb for eva. Seriously, relying on kdevelop is not a good way to start out. The last thing the world needs is another drag and drop programmer. When things go tits up, success favours those who know what they're doing. I disagree wholeheartedly. Using the command-line to build software is good for exactly one type of software program: A hi there program to make sure everything is in working order. Knowing _how_ to use the command-line compiler is good enough. After that, head off to the IDE and let it manage your software projects, using Google to hunt down weird problems. A little knowledge of things like buffer over flows saves us many exploits. That has absolutely nothing to do with using an IDE or the command-line. There is no correlation. Bad programmers use gcc (or IDEs) just as well as good programmers. Well, all I know is that I started a new KDevelop project (simple SDL), created empty files and copied my original source code into the empty files (I don't want KDevelop messing with my original files.) I then asked to build the project. It generated about ten kazillion errors. Things like #include statement nested too far in, whatever that means. Do something simple first with the IDE and get that working. The KDevelop website has step-by-step tutorials to get you up and running. Don't just dump in a project that doesn't work properly in the first place and expect it to work when you don't know the first thing about the IDE. If you've never _used_ an IDE before, it takes a bit to get acquainted with but is, IMO, worth the effort. And KDevelop isn't the only IDE out there for Linux. Some people prefer others like Anjuta. Just find one with a good debugging interface. IMO, a game is not a good first C++ project to tackle while learning the language. Games require..finesse. The project built just fine with my original files on the command line. It creates a battle executable. When I try to debug it though, I ask Clarify your pronouns. It being which - KDevelop executing gcc or command-line gcc? for a breakpoint on battle::battle() and it claims to comply, but when I It being which - KDevelop or gdb? As I said before, gdb works fine with C code but apparently doesn't work so well with C++ (VC++ has the superior debugger when it comes to stepping through C++ code). KDevelop uses gdb behind the scenes... run it, it goes right past without stopping. When I ask for a breakpoint on battle.cpp:13 it claims that it doesn't know about battle.cpp. And when I try to issue a list command, it says something about files that don't exist. Specifically, temporary portage build files. I know that's a Gentoo-specific problem, but I can't continue working on this project until I track down this SegFault... KDevelop setup-specific issues should probably be directed at their web forum. And you should really go through their tutorials. A pain, I know, but probably necessary. Either that or find someone you know who also knows how to use KDevelop to show you the ropes. I gave you a pretty good starting point to look into a few posts back that would have been a major cause of crashing issues. Did you try the suggested fix? -- Thomas Hruska CubicleSoft President Ph: 517-803-4197 *NEW* MyTaskFocus 1.1 Get on task. Stay on task. http://www.CubicleSoft.com/MyTaskFocus/ Look. I'll make this very, very simple. I DO NOT want to use KDevelop. I use gvim. When I wrote my original source code files, they (the original files) compile just fine while running make at the command line. I am trying to find the source of the segmentation fault. And for your information, this is not my first C++ project. I've had numerous university classes on programming using C++. I'm trying very hard not to be insulting, but it's very difficult as you seem to think that I'm an imbecile and that I can't do this.
Re: [c-prog] Need help tracking down SegFault
Michael Sullivan wrote: Look. I'll make this very, very simple. I DO NOT want to use KDevelop. I use gvim. When I wrote my original source code files, they (the original files) compile just fine while running make at the command line. I am trying to find the source of the segmentation fault. And for your information, this is not my first C++ project. I've had numerous university classes on programming using C++. I'm trying very hard not to be insulting, but it's very difficult as you seem to think that I'm an imbecile and that I can't do this. Fine. Did you TRY my suggested fix? You haven't answered me either way. -- Thomas Hruska CubicleSoft President Ph: 517-803-4197 *NEW* MyTaskFocus 1.1 Get on task. Stay on task. http://www.CubicleSoft.com/MyTaskFocus/
Re: [c-prog] Need help tracking down SegFault
Thomas Hruska wrote: Michael Sullivan wrote: Look. I'll make this very, very simple. I DO NOT want to use KDevelop. I use gvim. When I wrote my original source code files, they (the original files) compile just fine while running make at the command line. I am trying to find the source of the segmentation fault. And for your information, this is not my first C++ project. I've had numerous university classes on programming using C++. I'm trying very hard not to be insulting, but it's very difficult as you seem to think that I'm an imbecile and that I can't do this. Fine. Did you TRY my suggested fix? You haven't answered me either way. Found one more crash location: currentrect is never allocated (and also not deallocated). The big crash bug though is the mybattle one. -- Thomas Hruska CubicleSoft President Ph: 517-803-4197 *NEW* MyTaskFocus 1.1 Get on task. Stay on task. http://www.CubicleSoft.com/MyTaskFocus/
Re: [c-prog] Need help tracking down SegFault
Thomas Hruska wrote: Michael Sullivan wrote: Look. I'll make this very, very simple. I DO NOT want to use KDevelop. I use gvim. When I wrote my original source code files, they (the original files) compile just fine while running make at the command line. I am trying to find the source of the segmentation fault. And for your information, this is not my first C++ project. I've had numerous university classes on programming using C++. I'm trying very hard not to be insulting, but it's very difficult as you seem to think that I'm an imbecile and that I can't do this. Fine. Did you TRY my suggested fix? You haven't answered me either way. If all of my suggestions still fail, you may have improperly installed SDL. Your gdb backtrace says it is a bad runtime resolution (a pretty rare circumstance - to have a good compile and link followed by bad runtime resolution). But you do have multiple crash bugs in your source and what with tossing around two initializations of the same SDL library and referencing who knows what will result in pretty much anything happening. -- Thomas Hruska CubicleSoft President Ph: 517-803-4197 *NEW* MyTaskFocus 1.1 Get on task. Stay on task. http://www.CubicleSoft.com/MyTaskFocus/
Re: [c-prog] Need help tracking down SegFault
On Sun, 2007-12-16 at 13:46 -0700, Thomas Hruska wrote: Michael Sullivan wrote: Look. I'll make this very, very simple. I DO NOT want to use KDevelop. I use gvim. When I wrote my original source code files, they (the original files) compile just fine while running make at the command line. I am trying to find the source of the segmentation fault. And for your information, this is not my first C++ project. I've had numerous university classes on programming using C++. I'm trying very hard not to be insulting, but it's very difficult as you seem to think that I'm an imbecile and that I can't do this. Fine. Did you TRY my suggested fix? You haven't answered me either way. Yes. I changed Battle mybattle = Battle() to Battle mybattle this morning. If it had worked, I would have said so. -- Thomas Hruska CubicleSoft President Ph: 517-803-4197
Re: [c-prog] Need help tracking down SegFault
Michael Sullivan wrote: OK. I need help tracking down a segmentation fault. The problem is that even with the backtrace information from gdb, I'm still not exactly sure where it is occurring. Here's the backtrace info: Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x4000 (LWP 31519)] 0xb7f2d69c in do_lookup_x () from /lib/ld-linux.so.2 (gdb) backtrace #0 0xb7f2d69c in do_lookup_x () from /lib/ld-linux.so.2 #1 0xb7f2da3e in _dl_lookup_symbol_x () from /lib/ld-linux.so.2 #2 0xb7f317c4 in _dl_fixup () from /lib/ld-linux.so.2 #3 0xb7f36db0 in _dl_runtime_resolve () from /lib/ld-linux.so.2 #4 0x08049bd3 in battle::battle () #5 0x0804a09f in main () It looks to me like something in my battle constructor is causing it, but the battle constructor creates four Allies, which makes calls to Character and the whole thing's a mess. I don't even know what code to post here. I've got the full source code of everything the project currently uses at http://www.espersunited.com/~michael/needhelp.txt . Please help, if you can. If there's any other information I can provide that would be useful, please let me know... Set a break point on the constructor and step in. [Non-text portions of this message have been removed]
Re: [c-prog] Need help tracking down SegFault
On Sat, 2007-12-15 at 19:53 +, ed wrote: Michael Sullivan wrote: OK. I need help tracking down a segmentation fault. The problem is that even with the backtrace information from gdb, I'm still not exactly sure where it is occurring. Here's the backtrace info: Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x4000 (LWP 31519)] 0xb7f2d69c in do_lookup_x () from /lib/ld-linux.so.2 (gdb) backtrace #0 0xb7f2d69c in do_lookup_x () from /lib/ld-linux.so.2 #1 0xb7f2da3e in _dl_lookup_symbol_x () from /lib/ld-linux.so.2 #2 0xb7f317c4 in _dl_fixup () from /lib/ld-linux.so.2 #3 0xb7f36db0 in _dl_runtime_resolve () from /lib/ld-linux.so.2 #4 0x08049bd3 in battle::battle () #5 0x0804a09f in main () It looks to me like something in my battle constructor is causing it, but the battle constructor creates four Allies, which makes calls to Character and the whole thing's a mess. I don't even know what code to post here. I've got the full source code of everything the project currently uses at http://www.espersunited.com/~michael/needhelp.txt . Please help, if you can. If there's any other information I can provide that would be useful, please let me know... Set a break point on the constructor and step in. [Non-text portions of this message have been removed] Can anyone inform me on how to do that with gdb? Here's my attempt: [EMAIL PROTECTED] ourrpg $ gdb battle GNU gdb 6.7.1 Copyright (C) 2007 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type show copying and show warranty for details. This GDB was configured as i686-pc-linux-gnu... Using host libthread_db library /lib/libthread_db.so.1. (gdb) b battle::battle() Breakpoint 1 at 0x804a3a6 (gdb) r Starting program: /home/michael/ourrpg/battle [Thread debugging using libthread_db enabled] [New Thread 0x4000 (LWP 31855)] Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x4000 (LWP 31855)] 0xb7fd969c in do_lookup_x () from /lib/ld-linux.so.2 (gdb)
Re: [c-prog] Need help tracking down SegFault
Michael Sullivan wrote: On Sat, 2007-12-15 at 19:53 +, ed wrote: Michael Sullivan wrote: OK. I need help tracking down a segmentation fault. The problem is that even with the backtrace information from gdb, I'm still not exactly sure where it is occurring. Here's the backtrace info: Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x4000 (LWP 31519)] 0xb7f2d69c in do_lookup_x () from /lib/ld-linux.so.2 (gdb) backtrace #0 0xb7f2d69c in do_lookup_x () from /lib/ld-linux.so.2 #1 0xb7f2da3e in _dl_lookup_symbol_x () from /lib/ld-linux.so.2 #2 0xb7f317c4 in _dl_fixup () from /lib/ld-linux.so.2 #3 0xb7f36db0 in _dl_runtime_resolve () from /lib/ld-linux.so.2 #4 0x08049bd3 in battle::battle () #5 0x0804a09f in main () It looks to me like something in my battle constructor is causing it, but the battle constructor creates four Allies, which makes calls to Character and the whole thing's a mess. I don't even know what code to post here. I've got the full source code of everything the project currently uses at http://www.espersunited.com/~michael/needhelp.txt . Please help, if you can. If there's any other information I can provide that would be useful, please let me know... Set a break point on the constructor and step in. [Non-text portions of this message have been removed] Can anyone inform me on how to do that with gdb? Here's my attempt: [EMAIL PROTECTED] ourrpg $ gdb battle GNU gdb 6.7.1 Copyright (C) 2007 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type show copying and show warranty for details. This GDB was configured as i686-pc-linux-gnu... Using host libthread_db library /lib/libthread_db.so.1. (gdb) b battle::battle() Breakpoint 1 at 0x804a3a6 (gdb) r Starting program: /home/michael/ourrpg/battle [Thread debugging using libthread_db enabled] [New Thread 0x4000 (LWP 31855)] Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x4000 (LWP 31855)] 0xb7fd969c in do_lookup_x () from /lib/ld-linux.so.2 (gdb) You should seriously consider using an IDE such as KDevelop: http://www.kdevelop.org/ KDevelop uses gdb behind the scenes for debugging without displaying the ugly nitty-gritty details. However, while gdb works fine for C, VC++ has the far superior C++ debugger. Even then, using command-line gdb isn't really all that useful. Use tools (such as KDevelop) that help you write better code faster even if they aren't as pure or noble as the command-line. I may take a look at the source code later. -- Thomas Hruska CubicleSoft President Ph: 517-803-4197 *NEW* MyTaskFocus 1.1 Get on task. Stay on task. http://www.CubicleSoft.com/MyTaskFocus/
Re: [c-prog] need help on sscanf()
On Dec 12, 2007 8:54 PM, mano M [EMAIL PROTECTED] wrote:
i need to use %s and %d in sscanf function. It is not actually working as I
expected .I simulated the issue using a sample program.
#includestdio.h
int main()
{
char str[100]=hello|67;
char s1[10];
int num;
sscanf(str,%s|%d,s1,num);
printf(%s,s1);
}
output: hello|67
I don't think sscanf will parse string like that without whitespace,
it's going to read the entire string at once. I think strtok() will
work better for splitting the string on the | character.
-- Brett
In the rhythm of music a secret is hidden;
If I were to divulge it, it would overturn the world.
-- Jelaleddin Rumi
Re: [c-prog] Need help
On Dec 1, 2007 7:14 AM, Abhaya Patra. [EMAIL PROTECTED] wrote: Can someone please send me one demo project on C++ in Unix environment. That will be very useful for me. Waiting for your kind cooperation. Take a look on freshmeat.net, thousands of projects, most open source. -- Brett In the rhythm of music a secret is hidden; If I were to divulge it, it would overturn the world. -- Jelaleddin Rumi
Re: [c-prog] Need help
Abhaya Patra. wrote:
Hi ,
Can someone please send me one demo project on C++ in Unix environment.
That will be very useful for me.
Waiting for your kind cooperation.
Thanks,
Abhaya.
int main(void)
{
return 0;
}
--
Thomas Hruska
CubicleSoft President
Ph: 517-803-4197
*NEW* MyTaskFocus 1.1
Get on task. Stay on task.
http://www.CubicleSoft.com/MyTaskFocus/
Re: [c-prog] Need help
Abhaya Patra. wrote: Hi , Can someone please send me one demo project on C++ in Unix environment. That will be very useful for me. Waiting for your kind cooperation. Thanks, Abhaya. And now on a more serious note: While it is admirable that you are wanting something to do and want to spend your time learning C/C++, c-prog is not here to give you ideas on what to do. The choice of what project to work on next is entirely up to you and is completely based on your personal preference, skill set, and interests. The 'Links' section on the c-prog website has an entire category called 'Projects': http://tech.groups.yahoo.com/group/c-prog/links/Projects_001115340703/ The links contained there are useful if you want to learn new skills by testing yourself or want to take on a project as a freelancer and get paid for work completed or perhaps you are interested in open source or...well, the list goes on and on. And perhaps you fancy developing your own software products. The members of c-prog won't author software for you just because you want it. c-prog demands excellence from its members. You won't learn anything if anyone simply provides you with software/source code. In fact, you will likely become dependent upon the group and a burden to other people should you get a programming job. Today's business world demands self-reliance. Therefore, one of the most critical skills you can develop as a programmer is choosing for yourself what projects to work on next and how to go about developing those projects. Figure out what it is that interests you most and then pursue the goal you set for yourself. One thing I do that aids me greatly is keeping a list of things I want to do project-wise. Whenever I come up with an idea for a software product, I write it down in that list right away and try to flesh it out somewhat so that when I return to it later I can remember why I wrote it down. I also keep track of what I want to do for version releases of my current software products. Basically, this is a living list that grows and shrinks over time (but it mostly just grows). However! When I add an item to my list, I try to make sure the idea is unique in some fashion. There are so many software products out there that already exist that it is fairly pointless to duplicate someone else's effort unless there is a very good reason to do so beyond the making yet another clone of XYZ reason where the overall software is inferior to the product being duplicated. Just before I go on the warpath to developing a new product, I do my homework. I run hundreds of Google queries and visit the most popular software distribution sites in an attempt to find an existing product that does what I want to do. If it exists, even in a limited fashion, I weigh the effort involved in developing a competitive product versus developing other items in my list that are truly unique. I've got about 50 products and product ideas at any given time on my list. And, no, you can't have any of them. [off-topic] I've started making living lists for other things as well. For example, Christmas lists have traditionally been a nuisance. I used to get asked for the list and trying to remember on the spot what sort of things I wanted always ended up in getting stuff I didn't really want. Now I keep a detailed list as I go along and then siphon off a small number of items with a wide variety of price ranges every year. I've tried various tools that do list management (including the paper and pencil variety) and, amazingly, a plain ol' text document in Notepad works far better than any other mechanism. [/off-topic] Examples of the outcome of ideas from my living lists are the very products on my website. VerifyMyPC was born from an idea on that list but the first attempt was a complete failure and even the latest version still isn't quite what I want it to be but it still works like a charm for my needs. I've already caught Microsoft with its pants down using VerifyMyPC. VerifyMyPC has even been labeled as the poor man's tripwire - that is, I accidentally made a lightweight Intrustion Detection System - not what it was intended for but some users have found it to be an invaluable tool as an IDS system. Also, keep in mind, that because the market is saturated with software products, you probably shouldn't release your version of Tetris just because you wrote it. I have thousands of software programs I've written but never released. If you put your program on the Internet, you better be ready and capable of supporting that program. I have too many products as-is. -- Thomas Hruska CubicleSoft President Ph: 517-803-4197 *NEW* MyTaskFocus 1.1 Get on task. Stay on task. http://www.CubicleSoft.com/MyTaskFocus/
Re: [c-prog] Need help tracking down cause of SegFault
On Dec 1, 2007 5:27 PM, Michael Sullivan [EMAIL PROTECTED] wrote:
I know that a segmentation fault is the equivalent of a null pointer
exception in Java, but I don't understand why it's happening here. My
full code is posted at
http://www.espersunited.com/~michael/needhelp.txt . Basically the
problem is this:
A segmentation fault can mean you are accessing memory you have no
permission to use, like if you are trying to access memory you have
not allocated (null pointer).
I didn't go through all of your code but a few things stuck out at me.
One thing I recommend is to stop using char * or char[] and use the
C++ string class, it'll eliminate some headaches with strings.
Also, instead of using a plain old array in your battle class, I'd use
a vector or or a list or similar kind of C++ container class, they are
a lot more flexible than plain old arrays, especially when it comes to
adding more entries into it.
Definitely learn how to use a C++ debugger... if using gdb isn't up
your alley, get Eclipse, KDevelop or Anjuta (I am assuming you are on
Linux) and use their graphical debuggers (which probably use gdb
underneath).
class battle
{
private:
Ally party[4];
};
battle::battle()
{
party[0] = Ally(Michael, 10, 7);
party[1] = Ally(Amy, 8, 13);
party[2] = Ally(Feli, 12, 15);
party[3] = Ally(Imp, 9, 4);
}
class Ally : public Character
{
public:
Ally(){}
Ally(char*, long, long);
~Ally();
};
Ally::Ally(char* myname, long h, long m) : Character(myname, h, m)
{
printf(Arrived in Ally constructor for %s.\n, myname);
}
Character::Character(char *myName, long myMaxHP, long myMaxMP)
{
strcpy(name,myName);
maxHP = myMaxHP;
maxMP = myMaxMP;
currentHP = maxHP;
currentMP = maxMP;
}
Now I've tracked the SegFault down to the battle constructor,
specifically the line where the 'Amy' Ally is being created. The
program enters the Ally constructor, and then SegFaults. I have very
little experience with gdb and ddd doesn't work at all. Can anyone see
the problem with this? Am I out of stack space? Do I need to start
using the heap?
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--
In the rhythm of music a secret is hidden;
If I were to divulge it, it would overturn the world.
-- Jelaleddin Rumi
Re: [c-prog] Need help tracking down cause of SegFault [SOLVED]
On Sat, 2007-12-01 at 18:02 -0500, Brett McCoy wrote:
On Dec 1, 2007 5:27 PM, Michael Sullivan [EMAIL PROTECTED]
wrote:
I know that a segmentation fault is the equivalent of a null pointer
exception in Java, but I don't understand why it's happening here.
My
full code is posted at
http://www.espersunited.com/~michael/needhelp.txt . Basically the
problem is this:
A segmentation fault can mean you are accessing memory you have no
permission to use, like if you are trying to access memory you have
not allocated (null pointer).
I didn't go through all of your code but a few things stuck out at me.
One thing I recommend is to stop using char * or char[] and use the
C++ string class, it'll eliminate some headaches with strings.
Also, instead of using a plain old array in your battle class, I'd use
a vector or or a list or similar kind of C++ container class, they are
a lot more flexible than plain old arrays, especially when it comes to
adding more entries into it.
Definitely learn how to use a C++ debugger... if using gdb isn't up
your alley, get Eclipse, KDevelop or Anjuta (I am assuming you are on
Linux) and use their graphical debuggers (which probably use gdb
underneath).
class battle
{
private:
Ally party[4];
};
battle::battle()
{
party[0] = Ally(Michael, 10, 7);
party[1] = Ally(Amy, 8, 13);
party[2] = Ally(Feli, 12, 15);
party[3] = Ally(Imp, 9, 4);
}
class Ally : public Character
{
public:
Ally(){}
Ally(char*, long, long);
~Ally();
};
Ally::Ally(char* myname, long h, long m) : Character(myname, h, m)
{
printf(Arrived in Ally constructor for %s.\n, myname);
}
Character::Character(char *myName, long myMaxHP, long myMaxMP)
{
strcpy(name,myName);
maxHP = myMaxHP;
maxMP = myMaxMP;
currentHP = maxHP;
currentMP = maxMP;
}
Now I've tracked the SegFault down to the battle constructor,
specifically the line where the 'Amy' Ally is being created. The
program enters the Ally constructor, and then SegFaults. I have very
little experience with gdb and ddd doesn't work at all. Can anyone
see
the problem with this? Am I out of stack space? Do I need to start
using the heap?
I found a handy feature of gdb called 'backtrace' that told me where the
problem was. It seems I was attempting to call SDL_FreeSurface on a
surface that I haven't gotten around to creating yet...
Re: [c-prog] Need help tracking down cause of SegFault
Michael Sullivan wrote:
I know that a segmentation fault is the equivalent of a null pointer
exception in Java, but I don't understand why it's happening here. My
full code is posted at
http://www.espersunited.com/~michael/needhelp.txt . Basically the
problem is this:
class battle
{
private:
Ally party[4];
};
battle::battle()
{
party[0] = Ally(Michael, 10, 7);
party[1] = Ally(Amy, 8, 13);
party[2] = Ally(Feli, 12, 15);
party[3] = Ally(Imp, 9, 4);
}
class Ally : public Character
{
public:
Ally(){}
Ally(char*, long, long);
~Ally();
You still aren't using 'virtual' destructors.
};
Ally::Ally(char* myname, long h, long m) : Character(myname, h, m)
{
printf(Arrived in Ally constructor for %s.\n, myname);
}
Character::Character(char *myName, long myMaxHP, long myMaxMP)
{
strcpy(name,myName);
Where/How is 'name' defined? This is probably where your problem is.
maxHP = myMaxHP;
maxMP = myMaxMP;
currentHP = maxHP;
currentMP = maxMP;
}
Now I've tracked the SegFault down to the battle constructor,
specifically the line where the 'Amy' Ally is being created. The
program enters the Ally constructor, and then SegFaults. I have very
little experience with gdb and ddd doesn't work at all. Can anyone see
the problem with this? Am I out of stack space? Do I need to start
using the heap?
General observation: You aren't using any pre-built C++ components.
Brett already mentioned 'string', but I highly recommend BString. If
you are going to be tossing lots of string data around and aren't
familiar with 'string', you might as well use the buff class I wrote
(which offers a number of important features not found in 'string').
Also, you are statically declaring a party size to be 4. If that will
only allow 4 people and there will always be 4 people, then that's fine,
but if you want it to be dynamic (4...6...3...more, less), then Block
(or 'vector') is going to be more appropriate.
I recommend reading Safe C++ Design Principles. I haven't had a seg.
fault in almost 4 months at the library layer and over a year at the
application layer.
--
Thomas Hruska
CubicleSoft President
Ph: 517-803-4197
*NEW* MyTaskFocus 1.1
Get on task. Stay on task.
http://www.CubicleSoft.com/MyTaskFocus/
Re: [c-prog] Need help tracking down cause of SegFault
Michael Sullivan wrote:
I know that a segmentation fault is the equivalent of a null pointer
exception in Java, but I don't understand why it's happening here. My
full code is posted at
http://www.espersunited.com/~michael/needhelp.txt . Basically the
problem is this:
class battle
{
private:
Ally party[4];
};
battle::battle()
{
party[0] = Ally(Michael, 10, 7);
party[1] = Ally(Amy, 8, 13);
party[2] = Ally(Feli, 12, 15);
party[3] = Ally(Imp, 9, 4);
}
class Ally : public Character
{
public:
Ally(){}
Ally(char*, long, long);
~Ally();
};
Ally::Ally(char* myname, long h, long m) : Character(myname, h, m)
{
printf(Arrived in Ally constructor for %s.\n, myname);
}
Character::Character(char *myName, long myMaxHP, long myMaxMP)
{
strcpy(name,myName);
maxHP = myMaxHP;
maxMP = myMaxMP;
currentHP = maxHP;
currentMP = maxMP;
}
Now I've tracked the SegFault down to the battle constructor,
specifically the line where the 'Amy' Ally is being created. The
program enters the Ally constructor, and then SegFaults. I have very
little experience with gdb and ddd doesn't work at all. Can anyone see
the problem with this? Am I out of stack space? Do I need to start
using the heap?
Maybe a gdb cheat sheet can be of help, they're available for most
popular utils,
We use a4 paper size here:
http://refcards.com/docs/peschr/gdb/gdb-refcard-a4.pdf
http://www.google.co.uk/search?hl=enq=gdb+refcardbtnG=Google+Searchmeta=
[Non-text portions of this message have been removed]
Re: [c-prog] need help
Avik wrote: clear/flush your standard input buffer before you take a an input from standard input device (i.e. keyboard). use fflush(stdin) before scanf. e.g. scanf(%d, y); fflush(stdin); scanf(%c, z); fflush(stdin) is NON-ANSI Standard behavior. Besides...the input data could already be in the queue. -- Thomas Hruska CubicleSoft President Ph: 517-803-4197 *NEW* MyTaskFocus 1.1 Get on task. Stay on task. http://www.CubicleSoft.com/MyTaskFocus/
Re: [c-prog] need help
clear/flush your standard input buffer before you take a an input from standard
input device (i.e. keyboard).
use fflush(stdin) before scanf. e.g.
scanf(%d, y);
fflush(stdin);
scanf(%c, z);
- Original Message
From: naveen babu [EMAIL PROTECTED]
To: c-prog@yahoogroups.com
Sent: Thursday, 22 November, 2007 1:16:58 PM
Subject: [c-prog] need help
in LINUX i have return C program as
int x;
int y;
char z;
scanf(%d, x);
scanf(%d, y);
scanf(%c, z);
problem is , it is not taking the last scanf .i.e. char value z
control is not waiting for input it is coming out of the program exeecution
please help me out in this
Get the freedom to save as many mails as you wish. To know how, go to
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border:1px solid #d8d8d8;font-family:Arial;margin:14px 0px;padding:0px 14px;}
#ygrp-mkp hr{
border:1px solid #d8d8d8;}
#ygrp-mkp #hd{
color:#628c2a;font-size:85%;font-weight:bold;line-height:122%;margin:10px 0px;}
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margin-bottom:10px;}
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padding:0 0;}
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color:#ff;text-decoration:none;}
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font-family:Arial;}
#ygrp-sponsor #ygrp-lc #hd{
margin:10px 0px;font-weight:bold;font-size:78%;line-height:122%;}
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margin-bottom:10px;padding:0 0;}
--
!--
#ygrp-mlmsg {font-size:13px;font-family:arial, helvetica, clean, sans-serif;}
#ygrp-mlmsg table {font-size:inherit;font:100%;}
#ygrp-mlmsg select, input, textarea {font:99% arial, helvetica, clean,
sans-serif;}
#ygrp-mlmsg pre, code {font:115% monospace;}
#ygrp-mlmsg * {line-height:1.22em;}
#ygrp-text{
font-family:Georgia;
}
#ygrp-text p{
margin:0 0 1em 0;}
#ygrp-tpmsgs{
font-family:Arial;
clear:both;}
#ygrp-vitnav{
padding-top:10px;font-family:Verdana;font-size:77%;margin:0;}
#ygrp-vitnav a{
padding:0 1px;}
#ygrp-actbar{
clear:both;margin:25px 0;white-space:nowrap;color:#666;text-align:right;}
#ygrp-actbar .left{
float:left;white-space:nowrap;}
.bld{font-weight:bold;}
#ygrp-grft{
font-family:Verdana;font-size:77%;padding:15px 0;}
#ygrp-ft{
font-family:verdana;font-size:77%;border-top:1px solid #666;
padding:5px 0;
}
#ygrp-mlmsg #logo{
padding-bottom:10px;}
#ygrp-vital{
background-color:#e0ecee;margin-bottom:20px;padding:2px 0 8px 8px;}
#ygrp-vital #vithd{
font-size:77%;font-family:Verdana;font-weight:bold;color:#333;text-transform:uppercase;}
#ygrp-vital ul{
padding:0;margin:2px 0;}
#ygrp-vital ul li{
list-style-type:none;clear:both;border:1px solid #e0ecee;
}
#ygrp-vital ul li .ct{
font-weight:bold;color:#ff7900;float:right;width:2em;text-align:right;padding-right:.5em;}
#ygrp-vital ul li .cat{
font-weight:bold;}
#ygrp-vital a{
text-decoration:none;}
#ygrp-vital a:hover{
text-decoration:underline;}
#ygrp-sponsor #hd{
color:#999;font-size:77%;}
#ygrp-sponsor #ov{
padding:6px 13px;background-color:#e0ecee;margin-bottom:20px;}
#ygrp-sponsor #ov ul{
padding:0 0 0 8px;margin:0;}
#ygrp-sponsor #ov li{
list-style-type:square;padding:6px 0;font-size:77%;}
#ygrp-sponsor #ov li a{
text-decoration:none;font-size:130%;}
#ygrp-sponsor #nc{
background-color:#eee;margin-bottom:20px;padding:0 8px;}
#ygrp-sponsor .ad{
padding:8px 0;}
#ygrp-sponsor .ad #hd1{
font-family:Arial;font-weight:bold;color:#628c2a;font-size:100%;line-height:122%;}
#ygrp-sponsor .ad a{
text-decoration:none;}
#ygrp-sponsor .ad a:hover{
text-decoration:underline;}
#ygrp-sponsor .ad p{
margin:0;}
o{font-size:0;}
.MsoNormal{
margin:0 0 0 0;}
#ygrp-text tt{
font-size:120%;}
blockquote{margin:0 0 0 4px;}
.replbq{margin:4;}
--
Save all your chat conversations. Find them online at
http://in.messenger.yahoo.com/webmessengerpromo.php
[Non-text portions of this message have been removed]
Re: [c-prog] need help
Hi Naveen, just provide a space before %c and it will work. int x; int y; char z; scanf(%d,x); scanf(%d,y); scanf( %c,z); Regards, Prashant On Nov 22, 2007 1:16 PM, naveen babu [EMAIL PROTECTED] wrote: in LINUX i have return C program as int x; int y; char z; scanf(%d,x); scanf(%d,y); scanf(%c,z); problem is , it is not taking the last scanf .i.e. char value z control is not waiting for input it is coming out of the program exeecution please help me out in this Get the freedom to save as many mails as you wish. To know how, go to http://help.yahoo.com/l/in/yahoo/mail/yahoomail/tools/tools-08.html [Non-text portions of this message have been removed]
Re: [c-prog] need help with c-programming...just can put things together
On 4/5/07, Sumit Chawla [EMAIL PROTECTED] wrote:
On 05 Apr 2007 02:11:15 -0700, Meadowcreek_99 [EMAIL PROTECTED]
wrote:
Write a function that takes as input a string containing HTML source
code and returns both the # of images referenced in the code and the
total screen area (in square pixels) occupied by the images
The function MUST have the following declarationint
estImageContent(char *pacHTML, long int *pliArea);
1. Prompt the user for an input filename
2. Open the file, read its contents into a string (up to 2 bytes),
close file
3. Call estImageContent()
4. Print the following to the screen:
1. Input filename
2. Estimated # of images
3. Estimated total screen area in square pixels
5. Loop back to prompt
this is what i have so far
/* the first thing i did was uppercase*/
#include stdio.h
#include string.h
#include ctype.h
void fileToString(char filename[], char theString[]);
char *upperCaseTheString(char *pc);
int main()
{
char filename[] = p6in1.txt;
char theString[2] = ;
fileToString(filename, theString);
upperCaseTheString(theString);
printf(%s, theString);
return (0);
}
void fileToString(char filename[], char theString[]) {
FILE *fp;
char buf[BUFSIZ+1];
fp = fopen(filename, r);
while (fgets(buf, BUFSIZ, fp) != NULL) {
strcat(theString, buf);
}
fclose(fp);
}
char *upperCaseTheString(char *pc) {
char *pcReturn = pc;
while (*pc != '\0') {
*pc = toupper(*pc);
pc++;
}
return pcReturn;
}
fp=fopen(p6in.txt,r);
if(fp==NULL)
{
printf(\n\t\tSORRY..\n\t\... CANNOT OPEN FILE\n);
return 0;
}
printf(\n\t\tFILE data.txt FOUND!\n);
printf(\n\nSearch what string?\t);
gets(str1);
while ((fgets( str2, 100, fp )) != NULL) //not the end of file
{
if (strcmp(str1, str2)
iCount++;
}
printf(\n%d OCCURRENCES OF STRING %s FOUND, iCount ,str1);
}
__._,_.
How are u planning to find the area of images. Are u expecting it to be
specified in IMG tags?
-
i mean the width and height of the of the image is specified in the html
IMG tag itself
--
Regards
Sumit Chawla (eNetra : Hail the Invention)
Computers are useless. They can only give you answers.:Pablo Picasso
[Non-text portions of this message have been removed]
Re: [c-prog] need help
On 12/9/06, Pedro Izecksohn [EMAIL PROTECTED] wrote: --- ed [EMAIL PROTECTED] wrote: in soviet russia homework writes you!! The guy is in Egypt. It's a Slashdot joke/meme. -- PJH #713059 +(1255)- [X] SaintAlvus Does the name Doctor Pavlov ring a bell?
Re: [c-prog] need help
On Fri, 08 Dec 2006 08:47:30 - madmsb [EMAIL PROTECTED] wrote: hi all i,m new in C++ i want to know how to make this code my project is about bank timing simulation ( castmer going to bank one by one we want to calculate the time arrive and the time that castmer will be stay in the bank and the total timming ) plz any one have this code send it to me i have code that makeing account managment but i can't make this on any help will be useful thankx in soviet russia homework writes you!! -- Regards, Ed :: http://www.usenix.org.uk just another linux hacker No woman has ever lived long enough to cuddle with Chuck Norris after sex. Instead, he cuddles with his beard.
Re: [c-prog] need help
--- ed [EMAIL PROTECTED] wrote: in soviet russia homework writes you!! The guy is in Egypt. Yahoo! Music Unlimited Access over 1 million songs. http://music.yahoo.com/unlimited
