// Coin Flipping
// coin_flipping.c
// 
// This program was written by Tom Kunc (z5205060)
// on 2022-03-02
// 
// Count the number of heads flipped, and print out whenever
// a two heads are printed out in a row.

#include <stdio.h>

#define NUM_FLIPS 10

#define HEADS 'h'
#define TAILS 't'

#define TRUE 1
#define FALSE 0

int main(void) {
    int coin_count = 0;
    int heads_count = 0;
    
    int was_last_coin_heads = FALSE;
    char coin;

    while (coin_count < NUM_FLIPS) {
	// TODO: Let's count heads
	    printf("What coin side came up? ");
	    scanf(" %c", &coin);
	    if (coin != HEADS && coin != TAILS) {
	        printf("Wait! That's not heads or tails!\n");
	        
	        // by default, if we don't know what the
	        // flip is, let's make it a tails
	        coin = TAILS;
	    }
	    
	    // if the last coin was heads, and this
	    // coin is also a heads, then print out a message!
	    if (was_last_coin_heads == TRUE && coin == HEADS) {
	        printf("Two heads in a row -- very lucky!\n");
	    }
	    
	    was_last_coin_heads = FALSE;
	    
	    if (coin == HEADS) {
	        heads_count += 1;
	        was_last_coin_heads = TRUE;
	    }
	
	    // coin_count = coin_count + 1;
	    coin_count += 1;
    }
    
    printf("We saw %d heads, out of %d coins\n", heads_count, coin_count);

    return 0;
}