Xref: news2.mv.net comp.os.msdos.djgpp:892
Newsgroups: comp.os.msdos.djgpp
From: kunst AT natlab DOT research DOT philips DOT com (Pieter Kunst)
Subject: Re: signal
Sender: news AT natlab DOT research DOT philips DOT com (USENET News System)
Message-ID: <DMG7Kn.2rq@natlab.research.philips.com>
Date: Thu, 8 Feb 1996 08:29:11 GMT
References: <DMDxpG DOT 2v6 AT granite DOT mv DOT net>
Organization: Philips Research Laboratories, Eindhoven, The Netherlands
Lines: 37
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

In article <DMDxpG DOT 2v6 AT granite DOT mv DOT net> cameronbuschardt <c027319 AT email4 DOT starnetinc DOT com> writes:
>I sorry to waste your time, could someone show me how to use SIGNAL(Note:
>NOT THE DECLARATION...)??? Thanx...


#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>   /* sleep() */

typedef void (*PFVI)(int);

void onintr (void)
{
  static int nr = 0;

  signal (SIGINT, (PFVI) onintr);    /* reinstall ^c handler */
  printf ("CTRL-C pressed...\n");
  if (++nr >= 3) exit(1);
}

int main()
{
  int i;

  if (signal (SIGINT, SIG_IGN) != SIG_IGN)   /* install ^c handler */
    signal (SIGINT, (PFVI) onintr);

  printf ("Hit CRTL-C 3 times to stop this program:\n");
  for (i=1; i<=60; i++)
  {
    printf ("%3d\n", i);
    sleep (1);
  }
  return 0;
}