C++石头剪刀布游戏怎么做 随机选择与条件判断练习

要让c++++石头剪刀布游戏的电脑选择更智能，可通过记录玩家历史选择调整电脑出招概率；若仅需视觉上的“思考”，可引入延迟；避免无效输入的方法包括使用循环持续提示或支持字符串输入转换；扩展游戏功能如多局比赛和得分记录可通过引入循环与变量实现。

C++石头剪刀布游戏的核心在于如何让电脑随机选择，以及如何根据玩家和电脑的选择判断胜负。这涉及到随机数生成和条件语句的运用。

#include 
#include 
#include 
#include 

using namespace std;

int main() {
    // 初始化随机数种子
    srand(time(0));

    // 1 - 石头, 2 - 剪刀, 3 - 布
    int computerChoice = (rand() % 3) + 1;
    int userChoice;

    cout << "请选择：1 - 石头, 2 - 剪刀, 3 - 布" << endl;
    cin >> userChoice;

    string computerSelection;
    string userSelection;

    switch (computerChoice) {
        case 1:
            computerSelection = "石头";
            break;
        case 2:
            computerSelection = "剪刀";
            break;
        case 3:
            computerSelection = "布";
            break;
    }

    switch (userChoice) {
        case 1:
            userSelection = "石头";
            break;
        case 2:
            userSelection = "剪刀";
            break;
        case 3:
            userSelection = "布";
            break;
        default:
            cout << "无效的选择，请重新运行程序。" << endl;
            return 1; // 退出程序，表示出错
    }

    cout << "电脑选择了: " << computerSelection << endl;
    cout << "你选择了: " << userSelection << endl;

    // 判断胜负
    if (userChoice == computerChoice) {
        cout << "平局!" << endl;
    } else if ((userChoice == 1 && computerChoice == 2) ||
               (userChoice == 2 && computerChoice == 3) ||
               (userChoice == 3 && computerChoice == 1)) {
        cout << "你赢了!" << endl;
    } else {
        cout << "你输了!" << endl;
    }

    return 0;
}

如何让电脑的选择更加“智能”一点？

其实“智能”在这里更多的是指增加一些随机性，让玩家感觉电脑不是完全随机的。一种方式是记录玩家之前的选择，然后稍微调整电脑的选择概率。但这其实增加了游戏的复杂度，对于初学者来说，完全随机已经足够了。另一种方法是引入延迟，让电脑“思考”一下，但这更多是视觉上的效果，并没有真正改变随机性。

如何避免玩家输入无效的选项？

代码中已经加入了基本的输入验证，如果玩家输入了1、2、3之外的数字，程序会报错并退出。但还可以更进一步，例如使用循环来不断提示玩家输入，直到输入有效为止。或者，可以允许玩家输入字符串，然后将字符串转换为对应的数字。

故事AI绘图神器

文本生成图文视频的AI工具，无需配音，无需剪辑，快速成片，角色固定。

下载

立即学习“C++免费学习笔记（深入）”；

#include 
#include 
#include 
#include 

using namespace std;

int main() {
    srand(time(0));
    int computerChoice = (rand() % 3) + 1;
    int userChoice;

    while (true) {
        cout << "请选择：1 - 石头, 2 - 剪刀, 3 - 布" << endl;
        cin >> userChoice;

        if (userChoice >= 1 && userChoice <= 3) {
            break; // 输入有效，退出循环
        } else {
            cout << "无效的选择，请重新输入。" << endl;
        }
    }

    string computerSelection;
    string userSelection;

    switch (computerChoice) {
        case 1:
            computerSelection = "石头";
            break;
        case 2:
            computerSelection = "剪刀";
            break;
        case 3:
            computerSelection = "布";
            break;
    }

    switch (userChoice) {
        case 1:
            userSelection = "石头";
            break;
        case 2:
            userSelection = "剪刀";
            break;
        case 3:
            userSelection = "布";
            break;
    }

    cout << "电脑选择了: " << computerSelection << endl;
    cout << "你选择了: " << userSelection << endl;

    if (userChoice == computerChoice) {
        cout << "平局!" << endl;
    } else if ((userChoice == 1 && computerChoice == 2) ||
               (userChoice == 2 && computerChoice == 3) ||
               (userChoice == 3 && computerChoice == 1)) {
        cout << "你赢了!" << endl;
    } else {
        cout << "你输了!" << endl;
    }

    return 0;
}

如何扩展这个游戏，比如增加局数，记录得分？

增加局数和记录得分，只需要引入循环和变量即可。在主循环中，每一轮游戏结束后更新得分，然后询问玩家是否继续。

#include 
#include 
#include 
#include 

using namespace std;

int main() {
    srand(time(0));
    int userScore = 0;
    int computerScore = 0;
    char playAgain = 'y';

    while (playAgain == 'y' || playAgain == 'Y') {
        int computerChoice = (rand() % 3) + 1;
        int userChoice;

        while (true) {
            cout << "请选择：1 - 石头, 2 - 剪刀, 3 - 布" << endl;
            cin >> userChoice;

            if (userChoice >= 1 && userChoice <= 3) {
                break;
            } else {
                cout << "无效的选择，请重新输入。" << endl;
            }
        }

        string computerSelection;
        string userSelection;

        switch (computerChoice) {
            case 1:
                computerSelection = "石头";
                break;
            case 2:
                computerSelection = "剪刀";
                break;
            case 3:
                computerSelection = "布";
                break;
        }

        switch (userChoice) {
            case 1:
                userSelection = "石头";
                break;
            case 2:
                userSelection = "剪刀";
                break;
            case 3:
                userSelection = "布";
                break;
        }

        cout << "电脑选择了: " << computerSelection << endl;
        cout << "你选择了: " << userSelection << endl;

        if (userChoice == computerChoice) {
            cout << "平局!" << endl;
        } else if ((userChoice == 1 && computerChoice == 2) ||
                   (userChoice == 2 && computerChoice == 3) ||
                   (userChoice == 3 && computerChoice == 1)) {
            cout << "你赢了!" << endl;
            userScore++;
        } else {
            cout << "你输了!" << endl;
            computerScore++;
        }

        cout << "当前得分：你 - " << userScore << ", 电脑 - " << computerScore << endl;

        cout << "再玩一次吗？ (y/n)" << endl;
        cin >> playAgain;
    }

    cout << "游戏结束！最终得分：你 - " << userScore << ", 电脑 - " << computerScore << endl;

    return 0;
}