the-worlds-least-useful-clock/the-worlds-least-useful-clock.c

#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdbool.h>

int main (int argc, char ** argv)
{
	time_t timestamp;
	struct tm * timeinfo;
	srand(time(NULL));
	
	while (true)
	{		
		time(&timestamp);
		timeinfo = localtime(&timestamp);
		if ((rand() % 10) == 0)
		{
			printf("The time is now for coffee. Coffee time it is.\n");
		}
		else
		{
			printf("The time is now: %s", asctime(timeinfo));
		}
		
		fflush(stdout);
		sleep(rand() % 12);
	}
	
	return 0;
}