c++ 航班订票系统

以下是一个简单的C++航班订票系统的实现，包括添加航班信息、查询航班信息、订票、修改航班信息和退票等功能：

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

using namespace std;

// 定义航班信息结构体
struct Flight {
    string flightNo; // 航班号
    string departureCity; // 出发城市
    string arrivalCity; // 到达城市
    string departureTime; // 出发时间
    string arrivalTime; // 到达时间
    double price; // 票价
    double discount; // 折扣
    int tickets; // 票数
};

// 定义航班信息数组
vector<Flight> flights;

// 添加航班信息
void addFlight() {
    Flight flight;
    cout << "请输入航班号：";
    cin >> flight.flightNo;
    cout << "请输入出发城市：";
    cin >> flight.departureCity;
    cout << "请输入到达城市：";
    cin >> flight.arrivalCity;
    cout << "请输入出发时间：";
    cin >> flight.departureTime;
    cout << "请输入到达时间：";
    cin >> flight.arrivalTime;
    cout << "请输入票价：";
    cin >> flight.price;
    cout << "请输入折扣：";
    cin >> flight.discount;
    cout << "请输入票数：";
    cin >> flight.tickets;
    flights.push_back(flight);
    cout << "添加成功！" << endl;
}

// 按照航班号查询航班信息
void searchByFlightNo() {
    string flightNo;
    cout << "请输入航班号：";
    cin >> flightNo;
    for (int i = 0; i < flights.size(); i++) {
        if (flights[i].flightNo == flightNo) {
            cout << "航班号：" << flights[i].flightNo << endl;
            cout << "出发城市：" << flights[i].departureCity << endl;
            cout << "到达城市：" << flights[i].arrivalCity << endl;
            cout << "出发时间：" << flights[i].departureTime << endl;
            cout << "到达时间：" << flights[i].arrivalTime << endl;
            cout << "票价：" << flights[i].price << endl;
            cout << "折扣：" << flights[i].discount << endl;
            cout << "票数：" << flights[i].tickets << endl;
            return;
        }
    }
    cout << "未找到航班信息！" << endl;
}

// 按照目的地查询航班信息
void searchByArrivalCity() {
    string arrivalCity;
    cout << "请输入目的地城市：";
    cin >> arrivalCity;
    bool found = false;
    for (int i = 0; i < flights.size(); i++) {
        if (flights[i].arrivalCity == arrivalCity) {
            cout << "航班号：" << flights[i].flightNo << endl;
            cout << "出发城市：" << flights[i].departureCity << endl;
            cout << "到达城市：" << flights[i].arrivalCity << endl;
            cout << "出发时间：" << flights[i].departureTime << endl;
            cout << "到达时间：" << flights[i].arrivalTime << endl;
            cout << "票价：" << flights[i].price << endl;
            cout << "折扣：" << flights[i].discount << endl;
            cout << "票数：" << flights[i].tickets << endl;
            found = true;
        }
    }
    if (!found) {
        cout << "未找到航班信息！" << endl;
    }
}

// 订票
void bookTicket() {
    string flightNo;
    cout << "请输入航班号：";
    cin >> flightNo;
    for (int i = 0; i < flights.size(); i++) {
        if (flights[i].flightNo == flightNo) {
            if (flights[i].tickets > 0) {
                flights[i].tickets--;
                cout << "订票成功！" << endl;
            } else {
                cout << "该航班已售罄！" << endl;
            }
            return;
        }
    }
    cout << "未找到航班信息！" << endl;
}

// 修改航班信息
void modifyFlight() {
    string flightNo;
    cout << "请输入需要修改的航班号：";
    cin >> flightNo;
    for (int i = 0; i < flights.size(); i++) {
        if (flights[i].flightNo == flightNo) {
            cout << "请输入新的出发城市：";
            cin >> flights[i].departureCity;
            cout << "请输入新的到达城市：";
            cin >> flights[i].arrivalCity;
            cout << "请输入新的出发时间：";
            cin >> flights[i].departureTime;
            cout << "请输入新的到达时间：";
            cin >> flights[i].arrivalTime;
            cout << "请输入新的票价：";
            cin >> flights[i].price;
            cout << "请输入新的折扣：";
            cin >> flights[i].discount;
            cout << "请输入新的票数：";
            cin >> flights[i].tickets;
            cout << "修改成功！" << endl;
            return;
        }
    }
    cout << "未找到航班信息！" << endl;
}

// 退票
void refundTicket() {
    string flightNo;
    cout << "请输入航班号：";
    cin >> flightNo;
    for (int i = 0; i < flights.size(); i++) {
        if (flights[i].flightNo == flightNo) {
            flights[i].tickets++;
            cout << "退票成功！" << endl;
            return;
        }
    }
    cout << "未找到航班信息！" << endl;
}

int main() {
    while (true) {
        cout << "请选择功能：" << endl;
        cout << "1.添加航班信息" << endl;
        cout << "2.按照航班号查询航班信息" << endl;
        cout << "3.按照目的地查询航班信息" << endl;
        cout << "4.订票" << endl;
        cout << "5.修改航班信息" << endl;
        cout << "6.退票" << endl;
        cout << "7.退出系统" << endl;
        int choice;
        cin >> choice;
        switch (choice) {
            case 1:
                addFlight();
                break;
            case 2:
                searchByFlightNo();
                break;
            case 3:
                searchByArrivalCity();
                break;
            case 4:
                bookTicket();
                break;
            case 5:
                modifyFlight();
                break;
            case 6:
                refundTicket();
                break;
            case 7:
                return 0;
            default:
                cout << "无效的选择！" << endl;
                break;
        }
    }
    return 0;
}