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

void print_hi(int x){
	printf("Received signal %d\n", x);
}

int main(){
	struct sigaction action;
	action.sa_handler = print_hi;
	sigaction(SIGINT, &action, 0); 
	sigaction(SIGQUIT, &action, 0); 
	sigaction(SIGTERM, &action, 0); 

	/* This was just a weird example
	int(*x)(void) = main;
	void (*y)(int) = print_hi;
	y(5);
	*/

	while(1){
		sleep(1);
		puts("beep");
	}
	return 0;
}