Hello,
Wonder why some peole posts questions without even making a google
search.
'system()' is a library function that executes any shell command passed to
it as a string.
In the present context as Rick told it waits for the user to press any key
before the output shell / command prompt closes.
This ' system("PAUSE") ' is used generally in GCC compilers.
Regards,
Debasish
<html><DIV>
<P><FONT face="Lucida Handwriting, Cursive" color=#ff9900
size=2>Karmennavava Dhikaraste, Maaphaleshu
Kadaachanah</FONT></P></DIV></html>
----Original Message Follows----
From: Rick <[EMAIL PROTECTED]>
Reply-To: [email protected]
To: [email protected]
Subject: Re: [c-prog] can u solve this problem?
Date: Wed, 17 Jan 2007 09:38:42 -0500
If you double-click the program, it will run but the window will close
before you get a chance to see the results. The pause lets you view the
results before closing the window. The PAUSE isn't really needed. It simply
prints a message and waits for a response so the command prompt does not
close.
And, I didn't look close enough at the original program. The memory for str
should be allocated before it is used.
~Rick
At 1/16/2007 09:46 PM, you wrote:
>Hi Rick,
>
> Nice snippet !!! But, what is the use of system("PAUSE");
>in your program ?
>
>Cheers,
>Murali
>
>
>----- Original Message ----
>From: Rick <[EMAIL PROTECTED]>
>To: [email protected]
>Sent: Wednesday, 17 January, 2007 4:16:47 AM
>Subject: Re: [c-prog] can u solve this problem?
>
>At 1/16/2007 04:01 PM, you wrote:
>>Hi
>>
>>I want to write a program that reads a string s then sums the number
>>assciated to each string in teh alphabet like the following schema:
>>a=1,b=2,c=3, d=4,e=5,f= 6,g=7,h=8, i=9,j=10, k=20,l=30, m=40,n=50,
>>o=60,p=70,
>>q=80,r=90,s= 100,t=200, u=300,v=400, w=500,x=600, y=700,z=800.
>>
>>I wrote the following program for the first 10 characters of the schema.
>>But it didn't work properly.
>>
>>can u fix it?
>>
>>Here is the program:
>>============ ====
>>
>>
>>int main(int argc, char *argv[])
>>{
>> char *s;
>> int *t,n,a=0,i;
>>
>> cout << "Enter a string";
>> cin >> s ;
>> n=strlen(s);
>> for (i=0;i<n;i++)
>> {
>> switch(s[i])
>> {
>> case 'a':
>> {a=a+1;
>> t[1]=a;}
>>
>> case 'b':
>> {a=a+1;
>> t[2]=a;}
>>
>> case 'c':
>> {a=a+1;
>> t[3]=a;}
>> case 'd':
>> {a=a+1;
>> t[4]=a;}
>> case 'e':
>> {a=a+1;
>> t[5]=a;}
>> case 'f':
>> {a=a+1;
>> t[6]=a;}
>> case 'g':
>> {a=a+1;
>> t[7]=a;}
>> case 'h':
>> {a=a+1;
>> t[8]=a;}
>> case 'i':
>> {a=a+1;
>> t[9]=a;}
>> case 'j':
>> {a=a+1;
>> t[10]=a;}
>>
>>
>> }
>> a=a+t[i];
>>
>> }
>> cout << "the length is " << a;
>> system("PAUSE");
>> return 0;
>>}
>>
>>
>>Mohammed
>
>I'm not the best programmer around, but I would not use a switch statement.
>I would do something like this:
>
>#include <cstdlib>
>#include <iostream>
>
>using namespace std;
>
>// Add each letter in the supplied string using the following values:
>
>// a=1,b=2,c=3, d=4,e=5,f= 6,g=7,h=8, i=9,j=10, k=20,l=30, m=40,n=50,
>o=60,p=70,
>// q=80,r=90,s= 100,t=200, u=300,v=400, w=500,x=600, y=700,z=800.
>
>int main(int argc, char *argv[])
>{
>
> char *str;
> int val;
> int idx;
> int num;
> int tmp;
> int values[26] = {1,2,3,4,5,6, 7,8,9,10, 20,30,40, 50,60,70, 80,90,100,
>200,300,400, 500,600,700, 800};
>
> cout << "Enter a string: ";
> cin >> str;
> num=strlen(str) ;
> for (val=idx=0;idx<num;idx++)
> {
> tmp = str[idx]-'a' ;
> val += values[tmp];
> }
> cout << "The sum is " << val << endl;
>
> system("PAUSE");
> return EXIT_SUCCESS;
>}
>
>~Rick
>
>>
>>No need to miss a message.
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>
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