用c++写一个简易的飞机订票管理系统

好的，下面是一个简单的飞机订票管理系统的C++代码：

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

class Flight {
public:
    string flightNumber;
    string departureCity;
    string arrivalCity;
    int availableSeatNum;
    int *seatStatus;

    Flight(string fn, string dc, string ac, int asn) {
        flightNumber = fn;
        departureCity = dc;
        arrivalCity = ac;
        availableSeatNum = asn;
        seatStatus = new int[asn];
        for (int i = 0; i < asn; i++) {
            seatStatus[i] = 0;
        }
    }

    ~Flight() {
        delete[] seatStatus;
    }

    void displayFlightInfo() {
        cout << "Flight Number: " << flightNumber << endl;
        cout << "Departure City: " << departureCity << endl;
        cout << "Arrival City: " << arrivalCity << endl;
        cout << "Available Seat Number: " << availableSeatNum << endl;
    }

    bool isSeatAvailable(int seatNum) {
        if (seatNum < 1 || seatNum > availableSeatNum) {
            return false;
        }
        if (seatStatus[seatNum - 1] == 1) {
            return false;
        }
        return true;
    }

    bool bookSeat(int seatNum) {
        if (isSeatAvailable(seatNum)) {
            seatStatus[seatNum - 1] = 1;
            availableSeatNum--;
            return true;
        }
        return false;
    }

    void displaySeatStatus() {
        cout << "Seat Status:" << endl;
        for (int i = 0; i < availableSeatNum; i++) {
            cout << "Seat " << i + 1 << ": ";
            if (seatStatus[i] == 0) {
                cout << "Available" << endl;
            }
            else {
                cout << "Booked" << endl;
            }
        }
    }
};

class BookingSystem {
public:
    Flight **flights;
    int numFlights;

    BookingSystem() {
        flights = NULL;
        numFlights = 0;
    }

    ~BookingSystem() {
        if (flights != NULL) {
            for (int i = 0; i < numFlights; i++) {
                delete flights[i];
            }
            delete[] flights;
        }
    }

    void addFlight(string fn, string dc, string ac, int asn) {
        Flight **newFlights = new Flight*[numFlights + 1];
        for (int i = 0; i < numFlights; i++) {
            newFlights[i] = flights[i];
        }
        newFlights[numFlights] = new Flight(fn, dc, ac, asn);
        numFlights++;
        if (flights != NULL) {
            delete[] flights;
        }
        flights = newFlights;
    }

    void displayAllFlightsInfo() {
        for (int i = 0; i < numFlights; i++) {
            flights[i]->displayFlightInfo();
        }
    }

    Flight* findFlight(string fn) {
        for (int i = 0; i < numFlights; i++) {
            if (flights[i]->flightNumber == fn) {
                return flights[i];
            }
        }
        return NULL;
    }

    bool bookSeat(string fn, int seatNum) {
        Flight *flight = findFlight(fn);
        if (flight == NULL) {
            return false;
        }
        return flight->bookSeat(seatNum);
    }

    void displaySeatStatus(string fn) {
        Flight *flight = findFlight(fn);
        if (flight != NULL) {
            flight->displaySeatStatus();
        }
    }
};

int main() {
    BookingSystem bookingSystem;
    bookingSystem.addFlight("CA123", "Shanghai", "Beijing", 100);
    bookingSystem.addFlight("CA456", "Beijing", "Shanghai", 80);

    int choice;
    while (true) {
        cout << "1. Display all flights information" << endl;
        cout << "2. Book a seat" << endl;
        cout << "3. Display seat status" << endl;
        cout << "0. Exit" << endl;
        cout << "Please input your choice: ";
        cin >> choice;
        if (choice == 0) {
            break;
        }
        else if (choice == 1) {
            bookingSystem.displayAllFlightsInfo();
        }
        else if (choice == 2) {
            string fn;
            int seatNum;
            cout << "Please input flight number: ";
            cin >> fn;
            cout << "Please input seat number: ";
            cin >> seatNum;
            if (bookingSystem.bookSeat(fn, seatNum)) {
                cout << "Booked successfully!" << endl;
            }
            else {
                cout << "Booking failed!" << endl;
            }
        }
        else if (choice == 3) {
            string fn;
            cout << "Please input flight number: ";
            cin >> fn;
            bookingSystem.displaySeatStatus(fn);
        }
        else {
            cout << "Invalid input, please try again!" << endl;
        }
    }

    return 0;
}

该程序使用了面向对象的设计思想，定义了两个类：Flight和BookingSystem。Flight类表示航班，包含了航班号、出发城市、到达城市、可用座位数和座位状态等属性，以及一些查询航班信息、查询座位状态、预订座位等方法。BookingSystem类表示订票系统，包含了多个航班，以及一些添加航班、查询航班、预订座位等方法。

在主函数中，用户可以选择查看所有航班信息、预订座位、查询座位状态等操作。当用户选择预订座位时，程序会要求用户输入航班号和座位号，并根据输入的信息预订座位。当用户选择查询座位状态时，程序会要求用户输入航班号，并显示该航班的座位状态。