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

void hello(int signo) {
	printf("Hello\n");
	exit(EXIT_SUCCESS);
}

int main(int argc, char** argv) {
	struct sigaction sa;

	sa.sa_handler = hello;
	sa.sa_flags = 0;

	sigaction(SIGINT, &sa, 0);

	for(;;);
}