/* * File: cointest.c * ---------------- * This program simulates flipping a coin. */#include <stdio.h>#include <stdlib.h>#include "genlib.h"/* * Constants * --------- * NTrials -- Number of trials */#define NTrials 10/* Main program */main(){    int i;    for (i = 0; i < NTrials; i++) {        if (rand() <= RAND_MAX / 2) {            printf("Heads\n");        } else {            printf("Tails\n");        }    }}