/*
   Demostrate UNIX Interrupt
*/

#define _XOPEN_SOURCE 500

#include <stdio.h>
#include <signal.h>




void Int_Handler(int dummy)
{
   printf("****You typed control-Z");
}


int main()
{
   int i;

   printf("Setting up interrupt signal for SIGTSTP (control-Z)\n");
   sigset(SIGTSTP, Int_Handler);


   /* =========================================================
      Infinite loop that prints ..................
      ========================================================= */
   while (1)
   { 
/*
*/
      for (i = 0; i < 99999999; i++) ;
      printf("."); 
      fflush(stdout);
   }
}