用c++实现石头剪刀布

好的，以下是一个简单的石头剪刀布游戏的C++代码示例：

#include <iostream>
#include <cstdlib>
#include <ctime>

using namespace std;

int main() {
    int playerScore = 0;
    int computerScore = 0;
    int roundNumber = 1;

    cout << "欢迎来到石头剪刀布游戏！" << endl;

    while (true) {
        int playerChoice;
        cout << "第 " << roundNumber << " 回合，请输入你的选择（1：石头，2：剪刀，3：布）：";
        cin >> playerChoice;

        if (playerChoice < 1 || playerChoice > 3) {
            cout << "无效的选择，请重新输入！" << endl;
            continue;
        }

        int computerChoice = rand() % 3 + 1;

        cout << "你的选择是：";
        switch (playerChoice) {
            case 1:
                cout << "石头" << endl;
                break;
            case 2:
                cout << "剪刀" << endl;
                break;
            case 3:
                cout << "布" << endl;
                break;
        }

        cout << "电脑的选择是：";
        switch (computerChoice) {
            case 1:
                cout << "石头" << endl;
                break;
            case 2:
                cout << "剪刀" << endl;
                break;
            case 3:
                cout << "布" << endl;
                break;
        }

        if (playerChoice == computerChoice) {
            cout << "这一回合平局。" << endl;
        } else if ((playerChoice == 1 && computerChoice == 2) ||
                   (playerChoice == 2 && computerChoice == 3) ||
                   (playerChoice == 3 && computerChoice == 1)) {
            cout << "你赢了这一回合！" << endl;
            playerScore++;
        } else {
            cout << "电脑赢了这一回合。" << endl;
            computerScore++;
        }

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

        char playAgain;
        cout << "是否再玩一局？（Y/N）：";
        cin >> playAgain;

        if (playAgain == 'N' || playAgain == 'n') {
            break;
        }

        roundNumber++;
    }

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

    return 0;
}

这个程序使用了一个while循环来实现多轮游戏的功能。在每个回合中，它会提示玩家输入选择，然后生成一个随机数来模拟电脑的选择。接下来，程序会比较玩家和电脑的选择，并根据胜负情况来更新得分。最后，程序会询问玩家是否想再次玩游戏，如果是则进入下一轮游戏，否则结束游戏。