Programming

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

void my_action(int);

int count = 0;

int main(int argc, char** argv)
{
	struct sigaction sigalrm_action;
	struct itimerval timer;
	
	timer.it_interval.tv_sec = 0;	//Deal only in usec
	timer.it_interval.tv_usec = 1000;
	timer.it_value.tv_sec = 0;	//Deal only in usec
	timer.it_value.tv_usec = 1000;	

	sigalrm_action.sa_handler  = my_action;	
	sigemptyset(&sigalrm_action.sa_mask);
	sigalrm_action.sa_flags = 0;
	
	sigaction(SIGALRM, &sigalrm_action, 0);				

	printf("Hit any key to start, q to exit\n");	
	getchar();	
    	
	if(setitimer(ITIMER_REAL, &timer,NULL) != 0){
		perror("Error starting timer");
		exit(1);
	}    	
	while(getchar()!= 'q');	
	printf("Bye bye\n");
	return 0;
}

void my_action(int signum)
{	
	count++;
	printf("Count is %d\n", count);	
}