From: "Paul Bibbings" <paul DOT bibbings AT tesco DOT net>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: sprintf woes
Date: Thu, 10 Feb 2000 03:26:03 -0000
Organization: Tesco ISP
Lines: 55
Message-ID: <87tbs3$ftl$1@epos.tesco.net>
References: <87pssv$12f$1 AT nnrp1 DOT deja DOT com>
NNTP-Posting-Host: 212.140.69.164
X-Priority: 3
X-MSMail-Priority: Normal
X-Newsreader: Microsoft Outlook Express 5.00.2014.211
X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2014.211
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

The problem with your program is that you declare the pointers *f, *g, etc.,
but you don't associate any memory with these in which to store your
strings, and note that you need enough space to include the strings
themselves plus a terminating NULL character.
    Hence, for char *f use char f[2], and for char *j use j[7], etc. Your
program will then work properly. (See below).


<mrdang AT my-deja DOT com> wrote in message news:87pssv$12f$1 AT nnrp1 DOT deja DOT com...
> I am having a lot of trouble with sprintf.  I can not seem to make it
> do what I want within a subroutine / procedure.  As an example:


****************************************************************************

#include <stdio.h>

   void testing(void);

   int main()
   {
      char f[2], g[2], j[7];

      testing();
      testing();

      sprintf(f, "q");
      sprintf(g, "w");

      printf("%s\n", f);
      printf("%s\n", g);

      sprintf(j, "s: %s %s", f, g);
      printf("%s\n\n", j);

      return 0;
   }

   void testing()
   {
      char t[7], m[2], h[2];

      sprintf(m, "b");
      sprintf(h, "d");

      printf("%s\n", m);
      printf("%s\n", h);

      sprintf(t, "s: %s %s", m, h);
      printf("%s\n\n", t);
   }