用c++写一个酒店管理系统

好的，这是一个简单的酒店管理系统的C++代码，包括了客房信息的查看、预订和取消预订功能。

#include<iostream>
#include<conio.h>
#include<fstream>
#include<string>
using namespace std;

class hotel
{
    int room_no;
    string name;
    string address;
    string phone;
    string nationality;
public:
    void menu();
    void checkin();
    void cancellation();
    void room_status();
};

void hotel::menu()
{
    cout<<"\n\n\t\t\t\t\t\t\tWELCOME TO HOTEL MANAGEMENT SYSTEM"<<endl;
    cout<<"\t\t\t\t\t\t\t--------------------------------"<<endl;
    cout<<"\n\n\t\t\t\t\t\t\t1. Check-in a room"<<endl;
    cout<<"\t\t\t\t\t\t\t2. Cancellation of booking"<<endl;
    cout<<"\t\t\t\t\t\t\t3. Room status"<<endl;
    cout<<"\t\t\t\t\t\t\t4. Exit"<<endl;
}

void hotel::checkin()
{
    ofstream fout;
    fout.open("hotel.txt",ios::app);
    cout<<"\n\n\t\t\t\t\t\t\tEnter the room number: ";
    cin>>room_no;
    cout<<"\n\n\t\t\t\t\t\t\tEnter the name of the customer: ";
    cin>>name;
    cout<<"\n\n\t\t\t\t\t\t\tEnter the address of the customer: ";
    cin>>address;
    cout<<"\n\n\t\t\t\t\t\t\tEnter the phone number of the customer: ";
    cin>>phone;
    cout<<"\n\n\t\t\t\t\t\t\tEnter the nationality of the customer: ";
    cin>>nationality;
    fout<<room_no<<"\t"<<name<<"\t"<<address<<"\t"<<phone<<"\t"<<nationality<<endl;
    fout.close();
    cout<<"\n\n\t\t\t\t\t\t\tRoom booking done successfully!"<<endl;
}

void hotel::cancellation()
{
    int r_no;
    string line;
    ifstream fin;
    ofstream fout;
    fin.open("hotel.txt");
    fout.open("temp.txt",ios::trunc);
    cout<<"\n\n\t\t\t\t\t\t\tEnter the room number to be cancelled: ";
    cin>>r_no;
    while(getline(fin,line))
    {
        int room=stoi(line.substr(0,line.find("\t")));
        if(room!=r_no)
        {
            fout<<line<<endl;
        }
    }
    fin.close();
    fout.close();
    remove("hotel.txt");
    rename("temp.txt","hotel.txt");
    cout<<"\n\n\t\t\t\t\t\t\tRoom booking cancelled successfully!"<<endl;
}

void hotel::room_status()
{
    string line;
    ifstream fin;
    fin.open("hotel.txt");
    cout<<"\n\n\t\t\t\t\t\t\tRoom No."<<"\t"<<"Name"<<"\t\t"<<"Address"<<"\t\t"<<"Phone No."<<"\t"<<"Nationality"<<endl;
    cout<<"\t\t\t\t\t\t\t-----------------------------------------------------------"<<endl;
    while(getline(fin,line))
    {
        cout<<"\t\t\t\t\t\t\t"<<line<<endl;
    }
    fin.close();
}

int main()
{
    hotel h;
    int choice;
    while(true)
    {
        h.menu();
        cout<<"\n\n\t\t\t\t\t\t\tEnter your choice: ";
        cin>>choice;
        switch(choice)
        {
            case 1:
                h.checkin();
                break;
            case 2:
                h.cancellation();
                break;
            case 3:
                h.room_status();
                break;
            case 4:
                exit(0);
            default:
                cout<<"\n\n\t\t\t\t\t\t\tInvalid choice! Please enter a valid choice."<<endl;
        }
        getch();
        system("cls");
    }
    return 0;
}

这个程序使用了文件I/O，将房间预订信息保存在hotel.txt文件中。你可以根据需要修改程序来满足你的需求。