/*------------------------------------------------------------------*/
/* testsignal.c                                                     */
/* Author: Bob Dondero                                              */
/* The signal system call.                                          */
/*------------------------------------------------------------------*/

#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>

/*------------------------------------------------------------------*/

static void mySigintHandler(int iSignal)
{
   printf("In mySigintHandler with argument %d\n", iSignal);
}

/*------------------------------------------------------------------*/

int main(int argc, char *argv[])
{
   void (*pfRet)(int);

   pfRet = signal(SIGINT, mySigintHandler);
   if (pfRet == SIG_ERR) {perror(argv[0]); return EXIT_FAILURE; }

   printf("Entering an infinite loop\n");
   for (;;)
      ;

   /* Never should reach this point. */
}

/*------------------------------------------------------------------*/

/* Sample execution:

$ testsignal
Entering an infinite loop
^CIn mySigintHandler with argument 2
^CIn mySigintHandler with argument 2
^CIn mySigintHandler with argument 2

*/

/* Note:  Can use kill command or Ctrl-\ to stop process. */