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

void control_c(int x)
{ printf("you typed control c\n"); }

void alarmclock(int x)
{ printf("Alarm went off\n");
  exit(0); }

int main()
{ int i;
  signal(SIGINT, control_c);
  signal(SIGALRM, alarmclock);
  alarm(10);
  for (i=0; 1; i+=1)
  { printf("%d", i);
    fflush(stdout);
    sleep(2); } }