用C++写一个酒店入住的增删改查

好的，以下是一个简单的酒店入住管理系统的增删改查的C++实现：

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

// 定义一个酒店房间的结构体
struct Room {
    int roomNumber; // 房间号
    string guestName; // 入住客人姓名
    int guestNumber; // 入住客人人数
};

vector<Room> roomList; // 定义一个酒店房间的列表

// 添加房间
void addRoom() {
    Room room;
    cout << "请输入房间号：" << endl;
    cin >> room.roomNumber;
    cout << "请输入入住客人姓名：" << endl;
    cin >> room.guestName;
    cout << "请输入入住客人人数：" << endl;
    cin >> room.guestNumber;
    roomList.push_back(room);
    cout << "添加房间成功！" << endl;
}

// 删除房间
void deleteRoom() {
    int roomNumber;
    cout << "请输入要删除的房间号：" << endl;
    cin >> roomNumber;
    for (vector<Room>::iterator it = roomList.begin(); it != roomList.end(); it++) {
        if (it->roomNumber == roomNumber) {
            roomList.erase(it);
            cout << "删除成功！" << endl;
            return;
        }
    }
    cout << "该房间不存在！" << endl;
}

// 修改房间信息
void modifyRoom() {
    int roomNumber;
    cout << "请输入要修改的房间号：" << endl;
    cin >> roomNumber;
    for (vector<Room>::iterator it = roomList.begin(); it != roomList.end(); it++) {
        if (it->roomNumber == roomNumber) {
            cout << "请输入新的入住客人姓名：" << endl;
            cin >> it->guestName;
            cout << "请输入新的入住客人人数：" << endl;
            cin >> it->guestNumber;
            cout << "修改成功！" << endl;
            return;
        }
    }
    cout << "该房间不存在！" << endl;
}

// 查询房间信息
void queryRoom() {
    int roomNumber;
    cout << "请输入要查询的房间号：" << endl;
    cin >> roomNumber;
    for (vector<Room>::iterator it = roomList.begin(); it != roomList.end(); it++) {
        if (it->roomNumber == roomNumber) {
            cout << "房间号：" << it->roomNumber << endl;
            cout << "入住客人姓名：" << it->guestName << endl;
            cout << "入住客人人数：" << it->guestNumber << endl;
            return;
        }
    }
    cout << "该房间不存在！" << endl;
}

int main() {
    while (true) {
        cout << "请选择操作：" << endl;
        cout << "1. 添加房间" << endl;
        cout << "2. 删除房间" << endl;
        cout << "3. 修改房间信息" << endl;
        cout << "4. 查询房间信息" << endl;
        int choice;
        cin >> choice;
        switch (choice) {
            case 1:
                addRoom();
                break;
            case 2:
                deleteRoom();
                break;
            case 3:
                modifyRoom();
                break;
            case 4:
                queryRoom();
                break;
            default:
                cout << "输入有误，请重新输入！" << endl;
        }
    }
    return 0;
}

使用方法：

1. 编译运行程序
2. 选择需要的操作，根据提示进行操作即可

注意：本程序只是一个简单的示例，实际应用中还需要进行更多的错误处理和数据验证。