图书馆座位预约管理系统的C++语言的代码

好的，以下是一个简单的C++实现的图书馆座位预约管理系统的代码，仅供参考：

#include <iostream>
#include <vector>
#include <string>
#include <map>
using namespace std;

// 座位类
class Seat {
public:
    Seat(int id) {
        id_ = id;
        status_ = 0;
        user_name_ = "";
    }
    int get_id() {
        return id_;
    }
    int get_status() {
        return status_;
    }
    string get_user_name() {
        return user_name_;
    }
    void reserve(string user_name) {
        status_ = 1;
        user_name_ = user_name;
    }
    void cancel_reservation() {
        status_ = 0;
        user_name_ = "";
    }
private:
    int id_; // 座位ID
    int status_; // 座位状态：0-未预约，1-已预约
    string user_name_; // 预约用户名
};

// 用户类
class User {
public:
    User(string name) {
        name_ = name;
        seat_id_ = -1;
    }
    string get_name() {
        return name_;
    }
    int get_seat_id() {
        return seat_id_;
    }
    void reserve_seat(int seat_id) {
        seat_id_ = seat_id;
    }
    void cancel_reservation() {
        seat_id_ = -1;
    }
private:
    string name_; // 用户名
    int seat_id_; // 预约的座位ID
};

// 座位管理类
class SeatManager {
public:
    SeatManager(int num_seats) {
        for (int i = 1; i <= num_seats; i++) {
            Seat seat(i);
            seats_.push_back(seat);
        }
    }
    void show_all_seats() {
        cout << "所有座位信息：" << endl;
        cout << "座位ID\t状态\t预约用户" << endl;
        for (int i = 0; i < seats_.size(); i++) {
            cout << seats_[i].get_id() << "\t";
            cout << seats_[i].get_status() << "\t";
            cout << seats_[i].get_user_name() << endl;
        }
    }
    void reserve_seat(string user_name, int seat_id) {
        if (seat_id < 1 || seat_id > seats_.size()) {
            cout << "座位ID无效！" << endl;
            return;
        }
        Seat *seat = &seats_[seat_id - 1];
        if (seat->get_status() == 1) {
            cout << "该座位已经被预约了！" << endl;
            return;
        }
        seat->reserve(user_name);
        cout << "预约成功！" << endl;
    }
    void cancel_reservation(string user_name) {
        for (int i = 0; i < users_.size(); i++) {
            if (users_[i].get_name() == user_name) {
                int seat_id = users_[i].get_seat_id();
                if (seat_id != -1) {
                    Seat *seat = &seats_[seat_id - 1];
                    seat->cancel_reservation();
                    cout << "取消预约成功！" << endl;
                } else {
                    cout << "您没有预约任何座位！" << endl;
                }
                users_[i].cancel_reservation();
                return;
            }
        }
        cout << "您没有预约任何座位！" << endl;
    }
    void add_user(string user_name) {
        User user(user_name);
        users_.push_back(user);
    }
    void reserve_seat(string user_name, string seat_id_str) {
        int seat_id = stoi(seat_id_str);
        reserve_seat(user_name, seat_id);
    }
    void cancel_reservation(string user_name, string seat_id_str) {
        int seat_id = stoi(seat_id_str);
        Seat *seat = &seats_[seat_id - 1];
        if (seat->get_user_name() != user_name) {
            cout << "您没有预约该座位！" << endl;
            return;
        }
        seat->cancel_reservation();
        cout << "取消预约成功！" << endl;
    }
private:
    vector<Seat> seats_; // 座位数组
    vector<User> users_; // 用户数组
};

// 用户管理类
class UserManager {
public:
    void add_user(string user_name) {
        if (users_.find(user_name) != users_.end()) {
            cout << "该用户名已存在！" << endl;
            return;
        }
        SeatManager *seat_manager = get_seat_manager();
        if (seat_manager != nullptr) {
            seat_manager->add_user(user_name);
            users_.insert(pair<string, SeatManager *>(user_name, seat_manager));
        }
        cout << "用户添加成功！" << endl;
    }
    void reserve_seat(string user_name, string seat_id_str) {
        if (users_.find(user_name) == users_.end()) {
            cout << "该用户不存在！" << endl;
            return;
        }
        SeatManager *seat_manager = users_[user_name];
        seat_manager->reserve_seat(user_name, seat_id_str);
    }
    void cancel_reservation(string user_name, string seat_id_str) {
        if (users_.find(user_name) == users_.end()) {
            cout << "该用户不存在！" << endl;
            return;
        }
        SeatManager *seat_manager = users_[user_name];
        seat_manager->cancel_reservation(user_name, seat_id_str);
    }
private:
    SeatManager *get_seat_manager() {
        int num_seats;
        cout << "请输入座位数：";
        cin >> num_seats;
        if (num_seats <= 0) {
            cout << "座位数必须大于0！" << endl;
            return nullptr;
        }
        SeatManager *seat_manager = new SeatManager(num_seats);
        return seat_manager;
    }
    map<string, SeatManager *> users_; // 用户名和座位管理器的映射
};

int main() {
    UserManager user_manager;
    while (1) {
        cout << "请选择操作：" << endl;
        cout << "1. 添加用户" << endl;
        cout << "2. 预约座位" << endl;
        cout << "3. 取消预约" << endl;
        cout << "4. 查看所有座位信息" << endl;
        cout << "5. 退出" << endl;
        int choice;
        cin >> choice;
        switch (choice) {
            case 1: {
                string user_name;
                cout << "请输入用户名：";
                cin >> user_name;
                user_manager.add_user(user_name);
                break;
            }
            case 2: {
                string user_name, seat_id;
                cout << "请输入用户名：";
                cin >> user_name;
                cout << "请输入座位ID：";
                cin >> seat_id;
                user_manager.reserve_seat(user_name, seat_id);
                break;
            }
            case 3: {
                string user_name, seat_id;
                cout << "请输入用户名：";
                cin >> user_name;
                cout << "请输入座位ID：";
                cin >> seat_id;
                user_manager.cancel_reservation(user_name, seat_id);
                break;
            }
            case 4: {
                SeatManager seat_manager(0);
                seat_manager.show_all_seats();
                break;
            }
            case 5: {
                cout << "再见！" << endl;
                exit(0);
            }
            default: {
                cout << "无效操作！" << endl;
                break;
            }
        }
    }
    return 0;
}

这个代码示例使用了面向对象的设计，分别定义了座位类、用户类、座位管理类、用户管理类，以及一个主函数来处理用户的输入和输出。其中，座位管理类和用户管理类都包含一个座位数组和一个用户数组，座位数组用于存储所有座位的状态和预约信息，用户数组用于存储所有用户的预约信息。

如果您需要实现更复杂的功能，可以在这个基础上进行扩展。