// User-defined Signal Handler

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

// Handler for SIGINT, caused by Ctrl-C at keyboard

void handle_sigint(int sig)
{
	printf("Caught signal %d\n", sig);
}

int main()
{
	signal(SIGINT, handle_sigint);
	while (1) ;
	return 0;
}