c++编写

好的，以下是C++实现机房收费管理系统的示例代码：

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

using namespace std;

// 学生类
class Student {
public:
    string id;      // 学号
    string name;    // 姓名
    string className;   // 班级
    int startTime;  // 上机起始时间
    int endTime;    // 下机结束时间

    Student(string id, string name, string className, int startTime) {
        this->id = id;
        this->name = name;
        this->className = className;
        this->startTime = startTime;
    }

    // 计算上机费用
    int getCharge() {
        int duration = endTime - startTime;
        int hours = duration / 3600;    // 将秒转换为小时
        if (duration % 3600 != 0) {
            hours++;    // 不足一小时按一小时计算
        }
        return hours;
    }

    // 打印学生信息
    void printInfo() {
        cout << "学号：" << id << endl;
        cout << "姓名：" << name << endl;
        cout << "班级：" << className << endl;
        cout << "上机时间：" << startTime << endl;
        cout << "下机时间：" << endTime << endl;
        cout << "上机费用：" << getCharge() << "元" << endl;
    }
};

// 机房类
class ComputerRoom {
public:
    int id; // 机房编号
    int totalComputers; // 机房总共的电脑数量
    int freeComputers;  // 机房空闲的电脑数量

    ComputerRoom(int id, int totalComputers) {
        this->id = id;
        this->totalComputers = totalComputers;
        this->freeComputers = totalComputers;
    }

    // 显示机房信息
    void showInfo() {
        cout << "机房编号：" << id << endl;
        cout << "总共电脑数量：" << totalComputers << endl;
        cout << "空闲电脑数量：" << freeComputers << endl;
    }
};

// 机房管理类
class ComputerRoomManager {
public:
    vector<Student> students;    // 学生列表
    vector<ComputerRoom> rooms;  // 机房列表

    // 添加学生
    void addStudent(Student student) {
        students.push_back(student);
    }

    // 添加机房
    void addRoom(ComputerRoom room) {
        rooms.push_back(room);
    }

    // 显示学生信息
    void showStudents() {
        cout << "学生信息如下：" << endl;
        for (int i = 0; i < students.size(); i++) {
            students[i].printInfo();
            cout << endl;
        }
    }

    // 按条件查询学生信息
    void queryStudents(string id = "", string name = "", string className = "") {
        cout << "查询结果如下：" << endl;
        for (int i = 0; i < students.size(); i++) {
            if (id != "" && students[i].id != id) {
                continue;
            }
            if (name != "" && students[i].name != name) {
                continue;
            }
            if (className != "" && students[i].className != className) {
                continue;
            }
            students[i].printInfo();
            cout << endl;
        }
    }

    // 显示机房信息
    void showRooms() {
        cout << "机房信息如下：" << endl;
        for (int i = 0; i < rooms.size(); i++) {
            rooms[i].showInfo();
            cout << endl;
        }
    }

    // 预约机房
    void bookRoom(int roomId, string id, int startTime, int endTime) {
        // 找到指定编号的机房
        int index = -1;
        for (int i = 0; i < rooms.size(); i++) {
            if (rooms[i].id == roomId) {
                index = i;
                break;
            }
        }

        if (index == -1) {
            cout << "该机房不存在！" << endl;
            return;
        }

        // 检查机房是否有空闲电脑
        if (rooms[index].freeComputers <= 0) {
            cout << "该机房暂时没有空闲电脑，请选择其他机房！" << endl;
            return;
        }

        // 检查学生是否已经预约了其他机房
        for (int i = 0; i < students.size(); i++) {
            if (students[i].id == id && students[i].endTime > startTime) {
                cout << "该学生已经预约了其他机房，请选择其他时间段！" << endl;
                return;
            }
        }

        // 预约机房
        rooms[index].freeComputers--;
        Student student(id, "", "", startTime);
        student.endTime = endTime;
        students.push_back(student);
        cout << "预约成功！" << endl;
    }
};

int main() {
    // 初始化机房管理类
    ComputerRoomManager manager;
    manager.addRoom(ComputerRoom(1, 20));
    manager.addRoom(ComputerRoom(2, 30));

    // 添加学生信息
    manager.addStudent(Student("001", "Tom", "Class1", 1600000000));
    manager.addStudent(Student("002", "Jerry", "Class2", 1600005000));

    // 显示学生信息
    manager.showStudents();

    // 按条件查询学生信息
    manager.queryStudents("001", "", "");

    // 显示机房信息
    manager.showRooms();

    // 预约机房
    manager.bookRoom(1, "001", 1600001000, 1600002000);

    return 0;
}

以上代码实现了机房收费管理系统的基本功能，包括添加学生、查询学生、预约机房等功能。您可以根据自己的需求进行修改和完善。