#include <stdio.h>
#include <stdlib.h>
#include <time.h>
 
int rollDice(void);
 
int main() {
    int wins[22] = {0};
    int losses[22] = {0};
    int winSum = 0;
    long totalRolls = 0;
 
    srand(time(NULL));
 
    for (int i = 0; i < 1000000; i++) {
        int sum = rollDice();
        int rollCount = 1;
        int gameStatus;
        int point = 0;
 
        if (sum == 7 || sum == 11) {
            gameStatus = 1;
        } else if (sum == 2 || sum == 3 || sum == 12) {
            gameStatus = 2;
        } else {
            gameStatus = 0;
            point = sum;
        }
 
        while (gameStatus == 0) {
            sum = rollDice();
            rollCount++;
 
            if (sum == point) {
                gameStatus = 1;
            } else if (sum == 7) {
                gameStatus = 2;
            }
        }
 
        totalRolls += rollCount;
 
        if (rollCount > 21) {
            rollCount = 21;
        }
 
        if (gameStatus == 1) {
            wins[rollCount]++;
            winSum++;
        } else {
            losses[rollCount]++;
        }
    }
 
    for (int i = 1; i <= 20; i++) {
        printf("Won on roll %d: %d\n", i, wins[i]);
    }
    printf("Won after roll 20: %d\n\n", wins[21]);
 
    for (int i = 1; i <= 20; i++) {
        printf("Lost on roll %d: %d\n", i, losses[i]);
    }
    printf("Lost after roll 20: %d\n\n", losses[21]);
 
    printf("Chances of winning: %.2f%%\n", (winSum / 1000000.0) * 100);
    printf("Average game length: %.2f rolls\n", totalRolls / 1000000.0);
 
    return 0;
}
 
int rollDice(void) {
    int die1 = 1 + rand() % 6;
    int die2 = 1 + rand() % 6;
    return die1 + die2;
}

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