write a c++ program for the game rock paper scissor

在C++编写一个简单的"石头、剪刀、布"游戏程序，你可以创建一个控制台应用程序，让玩家输入选择，并与电脑随机选择进行比较。以下是基本的步骤：

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

enum Choices { ROCK, PAPER, SCISSORS };

int getComputerChoice() {
    srand(time(0));
    int choices[] = {ROCK, PAPER, SCISSORS};
    return choices[rand() % 3];
}

void playGame() {
    std::cout << "Choose your move (rock, paper, scissors): ";
    char userChoice;
    std::cin >> userChoice;

    if (userChoice == 'r') {
        userChoice = ROCK;
    } else if (userChoice == 'p') {
        userChoice = PAPER;
    } else if (userChoice == 's') {
        userChoice = SCISSORS;
    } else {
        std::cout << "Invalid choice! Please try again.\n";
        return playGame();
    }

    int computerChoice = getComputerChoice();

    switch (computerChoice) {
        case ROCK:
            if (userChoice == PAPER) {
                std::cout << "You chose " << static_cast<char>(userChoice) << ", computer chose " << static_cast<char>(ROCK)
                          << ". You win!\n";
            } else if (userChoice == SCISSORS) {
                std::cout << "You chose " << static_cast<char>(userChoice) << ", computer chose " << static_cast<char>(ROCK)
                          << ". Computer wins!\n";
            } else {
                std::cout << "It's a tie!\n";
            }
            break;
        case PAPER:
            if (userChoice == ROCK) {
                std::cout << "You chose " << static_cast<char>(userChoice) << ", computer chose " << static_cast<char>(PAPER)
                          << ". Computer wins!\n";
            } else if (userChoice == SCISSORS) {
                std::cout << "You chose " << static_cast<char>(userChoice) << ", computer chose " << static_cast<char>(PAPER)
                          << ". You win!\n";
            } else {
                std::cout << "It's a tie!\n";
            }
            break;
        case SCISSORS:
            if (userChoice == ROCK) {
                std::cout << "You chose " << static_cast<char>(userChoice) << ", computer chose " << static_cast<char>(SCISSORS)
                          << ". You lose!\n";
            } else if (userChoice == PAPER) {
                std::cout << "You chose " << static_cast<char>(userChoice) << ", computer chose " << static_cast<char>(SCISSORS)
                          << ". You win!\n";
            } else {
                std::cout << "It's a tie!\n";
            }
            break;
    }
}

int main() {
    while (true) {
        playGame();
        std::cout << "Do you want to play again? (y/n): ";
        char response;
        std::cin >> response;
        if (response != 'y' && response != 'Y') {
            break;
        }
    }
    return 0;
}