#include <stdio.h>
#include <signal.h>
#include <sys/time.h>



void signal_handler(){
	printf("One second elapsed !\n");
}


int main(){

	struct itimerval time;

	time.it_interval.tv_sec = 1;
	time.it_interval.tv_usec = 0;
	time.it_value.tv_sec = 1;
	time.it_value.tv_usec = 0;

	signal(SIGVTALRM, signal_handler);

	setitimer(ITIMER_VIRTUAL, &time, NULL);

	while(1);

	return 0;

}