请你用c++写一篇电影评分系统的代码：要求是包括电影资源管理、用户注册管理、用户为电影评分。并且要求有中文菜单，尽量代码写多一点

好的，下面是一个简单的电影评分系统的C++代码，包括电影资源管理，用户注册管理和用户对电影评分功能。中文菜单已经添加。

#include <iostream>
#include <string>
#include <map>
#include <vector>

using namespace std;

// 电影类
class Movie {
public:
    string name; // 电影名称
    string director; // 导演
    string actor; // 主演
    double score; // 评分

    Movie(string name, string director, string actor) {
        this->name = name;
        this->director = director;
        this->actor = actor;
        this->score = 0; // 初始评分为0
    }
};

// 用户类
class User {
public:
    string name; // 用户名
    string password; // 密码
    vector<double> scores; // 所有电影的评分

    User(string name, string password) {
        this->name = name;
        this->password = password;
    }

    // 添加电影评分
    void addScore(double score) {
        scores.push_back(score);
    }
};

// 电影评分系统类
class MovieRatingSystem {
private:
    map<string, Movie> movies; // 所有电影
    map<string, User> users; // 所有用户

public:
    // 添加电影
    void addMovie(string name, string director, string actor) {
        Movie movie(name, director, actor);
        movies[name] = movie;
    }

    // 注册用户
    void addUser(string name, string password) {
        User user(name, password);
        users[name] = user;
    }

    // 显示所有电影
    void showAllMovies() {
        cout << "所有电影：" << endl;
        for (auto it = movies.begin(); it != movies.end(); it++) {
            cout << "电影名称：" << it->second.name << endl;
            cout << "导演：" << it->second.director << endl;
            cout << "主演：" << it->second.actor << endl;
            cout << "评分：" << it->second.score << endl;
            cout << endl;
        }
    }

    // 显示所有用户
    void showAllUsers() {
        cout << "所有用户：" << endl;
        for (auto it = users.begin(); it != users.end(); it++) {
            cout << "用户名：" << it->second.name << endl;
            cout << "密码：" << it->second.password << endl;
            cout << "评分：" << endl;
            for (int i = 0; i < it->second.scores.size(); i++) {
                cout << it->second.scores[i] << " ";
            }
            cout << endl << endl;
        }
    }

    // 用户为电影评分
    void rateMovie(string userName, string movieName, double score) {
        if (users.find(userName) == users.end()) {
            cout << "用户不存在！" << endl;
        } else if (movies.find(movieName) == movies.end()) {
            cout << "电影不存在！" << endl;
        } else {
            users[userName].addScore(score);
            double sum = 0;
            for (int i = 0; i < users[userName].scores.size(); i++) {
                sum += users[userName].scores[i];
            }
            double avg = sum / users[userName].scores.size();
            movies[movieName].score = avg;
            cout << "评分成功！" << endl;
        }
    }
};

int main() {
    MovieRatingSystem system;
    int choice = 0;
    string name, password, movieName, director, actor;
    double score;

    while (true) {
        cout << "欢迎使用电影评分系统，请选择操作：" << endl;
        cout << "1. 添加电影" << endl;
        cout << "2. 注册用户" << endl;
        cout << "3. 显示所有电影" << endl;
        cout << "4. 显示所有用户" << endl;
        cout << "5. 为电影评分" << endl;
        cout << "6. 退出系统" << endl;
        cin >> choice;

        switch (choice) {
        case 1:
            cout << "请输入电影名称：";
            cin >> movieName;
            cout << "请输入导演：";
            cin >> director;
            cout << "请输入主演：";
            cin >> actor;
            system.addMovie(movieName, director, actor);
            cout << "添加成功！" << endl;
            break;
        case 2:
            cout << "请输入用户名：";
            cin >> name;
            cout << "请输入密码：";
            cin >> password;
            system.addUser(name, password);
            cout << "注册成功！" << endl;
            break;
        case 3:
            system.showAllMovies();
            break;
        case 4:
            system.showAllUsers();
            break;
        case 5:
            cout << "请输入用户名：";
            cin >> name;
            cout << "请输入电影名称：";
            cin >> movieName;
            cout << "请输入评分：";
            cin >> score;
            system.rateMovie(name, movieName, score);
            break;
        case 6:
            cout << "谢谢使用！" << endl;
            return 0;
        default:
            cout << "输入有误，请重新输入！" << endl;
            break;
        }
    }

    return 0;
}