掷骰子游戏

Question

我正在尝试让用户输入 y 或 n，游戏将退出或继续。我还想显示总输赢和用户退出。也许我没有真正掌握布尔值并返回函数中的东西？

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

int rollDice(void);
bool playGame(void);

int main(void)
{
    srand((unsigned)(time(NULL)));
    char userInput;
    while (true)
    {
        playGame();
        printf("Would you like to play again?");
        scanf("%c", &userInput);
        if (userInput == 'n' || userInput == 'N')
        {
            return false;
        }
        else
        {
            return true;
        }
    }
    return 0;
}
int rollDice(void)
{

    int dice1 = rand()%6+1;
    int dice2 = rand()%6+1;
    int totaldice = dice1 + dice2;

    return totaldice;
}
bool playGame(void)
{
    int point, total;
    int winCounter, looseCounter;
    printf("The game is starting!\n");
    total = rollDice();
    printf("You rolled: %d\n", total);
    if (total == 7 || total == 11)
    {

        printf("Wow it's your lucky day! You Win!\n");
        winCounter++;

    }
    else if (total == 2 || total == 3 || total == 12)
    {
        printf("Unlucky! You Loose!\n");
        looseCounter++;
    }
    else {
        point = total;
        printf("Your Point is: %d\n", point);
        while (true)
        {
            total = rollDice();
            printf("You rolled: %d\n", total);
            if (total == point)
            {
                printf("You made your point! You Win!\n");
                winCounter++;
                break;
            }
            else if (total == 7)
            {
                printf("Thats a %d. You Loose!\n", total);
                looseCounter++;
                break;
            }
        }

    }return true;
}

Answer 1

你的主要问题是，如果用户输入的内容与 'n' 或 'N' 不同，你会用 return instruction.Remove 终止主程序，然后循环可以继续.

如果使用布尔变量退出 while 循环更好:

int main(void)
{
    srand((unsigned)(time(NULL)));
    char userInput;

    bool paygame = true;

    while (paygame)
    {
        playGame();
        printf("Would you like to play again?");
        scanf(" %c", &userInput);

        printf ("Test: %c\n", userInput);
        if (userInput == 'n' || userInput == 'N')
        {
            paygame = false;
        }
    }
    return 0;
}

第二大问题是playgame函数的计数器：它们必须初始化为0。

int winCounter = 0, looseCounter = 0;

否则从随机数开始计数。

如果你想计算所有游戏的输赢，你可以简单地使用静态变量：

bool playGame(void)
{
    int point, total;
    static int winCounter = 0, looseCounter = 0;
    printf("The game is starting!\n");
    total = rollDice();
    printf("You rolled: %d\n", total);
    if (total == 7 || total == 11)
    {

        printf("Wow it's your lucky day! You Win!\n");
        winCounter++;

    }
    else if (total == 2 || total == 3 || total == 12)
    {
        printf("Unlucky! You Loose!\n");
        looseCounter++;
    }
    else {
        point = total;
        printf("Your Point is: %d\n", point);
        while (true)
        {
            total = rollDice();
            printf("You rolled: %d\n", total);
            if (total == point)
            {
                printf("You made your point! You Win!\n");
                winCounter++;
                break;
            }
            else if (total == 7)
            {
                printf("Thats a %d. You Loose!\n", total);
                looseCounter++;
                break;
            }
        }

    }

    printf ("Won: %d - Lose: %d\n", winCounter, looseCounter);

    return true;
}

最后一件事将 scanf 格式说明符更改为 " %c" 以允许 scanf 到 "flush" 换行 '\n' char left into stdin用户每次输入。

Answer 2

不要在 while 循环中使用 return。相反，使用变量并将其用于条件。也不需要让它为真，因为在你按下 n 或 N

之前条件一直为真

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

int rollDice(void);
bool playGame(void);

int main(void)
{
    srand((unsigned)(time(NULL)));
    char userInput;
    bool again = true;
    while (again==true)
    {
        printf("Would you like to play again?");
        scanf("%c", &userInput);
        if (userInput == 'n' || userInput == 'N')
        {
            again = false;
        }
    }
    return 0;
}

Answer 3

如果您想在用户退出后显示总计，您需要将它们存储在 playGame 函数之外。

目前 playGame 的 return 值没有意义，所以让我们用它来表示玩家是否获胜：

bool playGame(void)
{
    int point, total;
    printf("The game is starting!\n");
    total = rollDice();
    printf("You rolled: %d\n", total);
    if (total == 7 || total == 11)
    {
        printf("Wow it's your lucky day! You Win!\n");
        return true;
    }
    else if (total == 2 || total == 3 || total == 12)
    {
        printf("Unlucky! You Lose!\n");
        return false;
    }
    else
    {
        point = total;
        printf("Your Point is: %d\n", point);
        while (true)
        {
            total = rollDice();
            printf("You rolled: %d\n", total);
            if (total == point)
            {
                printf("You made your point! You Win!\n");
                return true;
            }
            else if (total == 7)
            {
                printf("Thats a %d. You Lose!\n", total);
                return false;
            }
        }

    }
    return false;
}

并对main稍作重写：

int main(void)
{
    srand((unsigned)(time(NULL)));
    int total = 0;
    int wins = 0;
    char userInput;
    while (true)
    {
        total += 1;
        if (playGame())
        {
            wins += 1;
        }
        printf("Would you like to play again?");
        scanf("%c", &userInput);
        if (userInput == 'n' || userInput == 'N')
        {
            break;
        }
    }
    printf("Of %d games, you won %d.", total, wins);
    return 0;
}

掷骰子游戏

The game of Craps

c

boolean

void