++*p++ ==> ++(*p++) , increments the value stored at p , and also increments p .
On Thu, Jun 16, 2011 at 1:10 PM, sunny agrawal <[email protected]>wrote: > The place where strict constness is not enforced is with character > array literals. You can say > char* cp = "howdy"; > and the compiler will accept it without complaint. This is > technically an error because a character array literal (“howdy” in > this case) is created by the compiler as a constant character array, > and the result of the quoted character array is its starting address in > memory. Modifying any of the characters in the array is a runtime > error, although not all compilers enforce this correctly. > So character array literals are actually constant character arrays. Of > course, the compiler lets you get away with treating them as nonconst > because there’s so much existing C code that relies on this. > However, if you try to change the values in a character array literal, > the behavior is undefined, although it will probably work on many > machines. > If you want to be able to modify the string, put it in an array: > char cp[] = "howdy"; > Since compilers often don’t enforce the difference you won’t be > reminded to use this latter form and so the point becomes rather > subtle. > > > On Thu, Jun 16, 2011 at 12:59 PM, amit kumar <[email protected]>wrote: > >> //kk >> //In place of >> >> char *p="hai friends",*p1; >> if i declare as >> char p[]="hai friends"; >> char *p1; >> //then ?? >> >> >> On Thu, Jun 16, 2011 at 8:16 AM, DIPANKAR DUTTA < >> [email protected]> wrote: >> >>> It's ok.. >>> >>> char *p="hai friends"...not correct.... >>> >>> bcz you did allocate memory for that string but assiging poiter to the >>> base address.. from where gcc will get the bse address of that string when u >>> r not actually allocate memory for it? thus it generate SIGSEG signal and >>> give invalid memory address...ie. segmentation fault >>> use malloc or use >>> char p[]=".."; >>> >>> >>> >>> >>> >>> >>> On Thu, Jun 16, 2011 at 4:49 AM, DK <[email protected]> wrote: >>> >>>> Gives me a SEGFAULT on gcc. >>>> Probably due to undefined behaviour. >>>> >>>> -- >>>> DK >>>> >>>> http://twitter.com/divyekapoor >>>> http://www.divye.in >>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "Algorithm Geeks" group. >>>> To view this discussion on the web visit >>>> https://groups.google.com/d/msg/algogeeks/-/QVAjKMQiWvoJ. >>>> >>>> To post to this group, send email to [email protected]. >>>> To unsubscribe from this group, send email to >>>> [email protected]. >>>> For more options, visit this group at >>>> http://groups.google.com/group/algogeeks?hl=en. >>>> >>> >>> >>> >>> -- >>> Thanks and Regards, >>> ------------------------------ >>> *DIPANKAR DUTTA* >>> Visiting Research Scholar >>> Dept of Computing, >>> Macquarie University, Sydney, Australia >>> ph.no-+61 2 98509079 ( Mon-Fri 10:15-7:00) Sydney time >>> email: [email protected] >>> >>> >>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "Algorithm Geeks" group. >>> To post to this group, send email to [email protected]. >>> To unsubscribe from this group, send email to >>> [email protected]. >>> For more options, visit this group at >>> http://groups.google.com/group/algogeeks?hl=en. >>> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Algorithm Geeks" group. >> To post to this group, send email to [email protected]. >> To unsubscribe from this group, send email to >> [email protected]. >> For more options, visit this group at >> http://groups.google.com/group/algogeeks?hl=en. >> > > > > -- > Sunny Aggrawal > B-Tech IV year,CSI > Indian Institute Of Technology,Roorkee > > > -- > You received this message because you are subscribed to the Google Groups > "Algorithm Geeks" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/algogeeks?hl=en. > -- Lalit Kishore Sharma, IIIT Allahabad (Amethi Capmus), 6th Sem. -- You received this message because you are subscribed to the Google Groups "Algorithm Geeks" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en.
