From: dontmailme AT iname DOT com (Steamer)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Cannot multiply
Date: Sat, 16 Dec 2000 20:53:29 GMT
Organization: always disorganized
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Franck Bauquier (Defcon1) wrote:

> This is a multi-part message in MIME format.

Please don't post in HTML.

> I got a program which is supposed to fill SRC with 5 "ABCDEFGHIJ" in a =
> row. Then the program is gonna pick 1 letter from SRC every ten letters =
> and put
> it in DEST, thus DEST would be filled with "AAAAA".
> Unfortunately, although it's working under Turbo C++, DJGPP refuse to =
> compile
> apparently because of a multiplication at the line: "src[i*10]";
> 
> Here's my source code:

It works for me (assuming =3D was meant to be = throughout).
 
> #include <stdio.h>
> #include <string.h>
> #include <stdlib.h>
> 
> void main()

This should be

  int main()

of course.

> {
> int i;
> char *src =3D (char *)malloc(100);
> char *dest =3D (char *)malloc(20);

You should always check that malloc() succeeds.

> strcpy(src,"ABCDEFGHIJABCDEFGHIJABCDEFGHIJABCDEFGHIJABCDEFGHIJ");
> 
> for (i=3D0; i<5; i++) dest[i] =3D src[i*10]; /* ERROR */

What makes you think this line was causing problems?

> dest[5]=3D0;
> 
> printf("\r\nSrc says: %s \r\nDest says: %s\n", src, dest);

You don't need \r with printf().  It works in text mode,
so \n gets translated to \r\n in DOS anyway.

> free(src);
> free(dest);

  return 0;

(Not actually required according to the new C standard, but...)

> }