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

int
main()
{
    int coin, guess;

    srand(time(NULL));

    coin = rand() % 2;
    printf("Your call (0:Heads, 1:Tails): ");
    scanf(" %d", &guess);
    if (coin == guess) {
	printf("You called it correctly!\n");
    } else {
	printf("Ha ha, wrong!\n");
    }
    return 0;
}