基于C++的航空客运订票系统项目

用C++语言做一个航空客运订票系统（需要完成数据持久化保存，使用vector存储数据。使用QT窗体实现）（1）航班管理。每条航班所涉及的信息有：终点站名、航班号、飞机型号、飞行日期、成员定额、余票量。（2）乘客管理。有关订票的乘客信息，包括姓名、订票量、舱位等级。（3）主要操作功能a)查询航班。根据终点站名输出下列信息：航班号、飞机型号、飞行日期、余票量。b)承办订票业务。根据乘客要求查询航班的余票额，票数量充足的情况下办理订票c)承办退票业务。旅客输入自己的个人姓名、航班号办理退票业务。

要能自己会改，主要涉及到数据管理、持久化、窗体设计等多个方面。以下是一个简单的实现步骤和大致的代码架构，仅供参考和借鉴。

1. 首先，设计并实现存储航班和乘客信息的类Flight和Passenger，以及相应的操作方法和数据结构。使用vector来存储数据，并将数据持久化到文件中。

代码示例（类声明部分）：

class Flight {
private:
    string dest;    //终点站
    string flightNo; //航班号
    string planeType; //飞机型号
    string date;    //飞行日期
    int quota;      //成员定额
    int tickets;    //余票量
public:
    Flight(string dest, string flightNo, string planeType, string date, int quota, int tickets);
    void setDest(string dest);
    void setFlightNo(string flightNo);
    void setPlaneType(string planeType);
    void setDate(string date);
    void setQuota(int quota);
    void setTickets(int tickets);
    string getDest();
    string getFlightNo();
    string getPlaneType();
    string getDate();
    int getQuota();
    int getTickets();
};

class Passenger {
private:
    string name;    //姓名
    int tickets;    //订票量
    int level;      //舱位等级
public:
    Passenger(string name, int tickets, int level);
    void setName(string name);
    void setTickets(int tickets);
    void setLevel(int level);
    string getName();
    int getTickets();
    int getLevel();
};

2. 设计并实现窗口界面，包括菜单、输入框、查询结果显示等控件。

代码示例：

#include <QtWidgets/QMainWindow>
#include <QPushButton>
#include <QLabel>
#include <QLineEdit>
#include <QProgressBar>
#include <QComboBox>
#include <QTableView>
#include <QStandardItemModel>
#include <QMessageBox>
#include <QString>
#include <QVBoxLayout>
#include <QStringList>
#include <QDateTime>

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    MainWindow(QWidget *parent = 0);
    ~MainWindow();

protected:
    void createMenuBar();
    void createWidgets();
    void createLayout();
    void createConnections();

private slots:
    void queryFlights();
    void addPassenger();
    void cancelTicket();

private:
    QMenuBar* menuBar;
    QPushButton* queryButton;
    QPushButton* addButton;
    QPushButton* cancelButton;
    QLabel* destLabel;
    QLabel* nameLabel;
    QLabel* flightLabel;
    QLabel* flightLabel2;
    QLineEdit* destEdit;
    QLineEdit* nameEdit;
    QComboBox* flightEdit;
    QTableView* resultView;
    QStandardItemModel* resultModel;
    vector<Flight> flights;
    vector<Passenger> passengers;
};

3. 实现航班管理和乘客管理相关的函数和操作，包括查询航班信息、订票、退票等操作。

代码示例：

void MainWindow::queryFlights()
{
    QString dest = destEdit->text();
    if (dest == "") {
        QMessageBox::warning(this, "Error", "Destination cannot be empty!");
        return;
    }
    resultModel->clear();
    resultModel->setHorizontalHeaderLabels(QStringList() << "Flight No." << "Plane Type" << "Date" << "Quota" << "Tickets Left");
    for (int i = 0; i < flights.size(); i++) {
        if (flights[i].getDest() == dest.toStdString()) {
            QList<QStandardItem*> items;
            items << new QStandardItem(QString::fromStdString(flights[i].getFlightNo()));
            items << new QStandardItem(QString::fromStdString(flights[i].getPlaneType()));
            items << new QStandardItem(QString::fromStdString(flights[i].getDate()));
            items << new QStandardItem(QString::number(flights[i].getQuota()));
            items << new QStandardItem(QString::number(flights[i].getTickets()));
            resultModel->appendRow(items);
        }
    }
}

void MainWindow::addPassenger()
{
    QString name = nameEdit->text();
    QString flight = flightEdit->currentText();
    int index = -1;
    for (int i = 0; i < flights.size(); i++) {
        if (flights[i].getFlightNo() == flight.toStdString()) {
            index
(续)

...
            break;
        }
    }
    if (index == -1) {
        QMessageBox::warning(this, "Error", "Cannot find the flight!");
        return;
    }
    int tickets = passengers.size();
    int quota = flights[index].getQuota();
    if (tickets >= quota) {
        QMessageBox::warning(this, "Error", "Tickets are sold out!");
        return;
    }
    Passenger p(name.toStdString(), 1, 1);
    passengers.push_back(p);
    flights[index].setTickets(quota - (int)passengers.size());
    QMessageBox::information(this, "Success", "Book a ticket successfully!");
}

void MainWindow::cancelTicket()
{
    QString name = nameEdit->text();
    QString flight = flightEdit->currentText();
    int index = -1;
    for (int i = 0; i < flights.size(); i++) {
        if (flights[i].getFlightNo() == flight.toStdString()) {
            index = i;
            break;
        }
    }
    if (index == -1) {
        QMessageBox::warning(this, "Error", "Cannot find the flight!");
        return;
    }
    for (int i = 0; i < passengers.size(); i++) {
        if (passengers[i].getName() == name.toStdString() && passengers[i].getTickets() == 1) {
            passengers.erase(passengers.begin() + i);
            int quota = flights[index].getQuota();
            flights[index].setTickets(quota + 1);
            QMessageBox::information(this, "Success", "Cancel the ticket successfully!");
            return;
        }
    }
    QMessageBox::warning(this, "Error", "No matching ticket to cancel!");
}

4. 将窗口界面和相关操作函数结合起来，实现完整的航空客运订票系统。

代码示例：

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
{
    createMenuBar();
    createWidgets();
    createLayout();
    createConnections();
}

void MainWindow::createMenuBar()
{
    menuBar = new QMenuBar(this);
    QMenu* fileMenu = new QMenu("File");
    QAction* saveAction = fileMenu->addAction("Save");
    QAction* loadAction = fileMenu->addAction("Load");
    menuBar->addMenu(fileMenu);
    setMenuBar(menuBar);
}

void MainWindow::createWidgets()
{
    queryButton = new QPushButton("Query", this);
    addButton = new QPushButton("Add", this);
    cancelButton = new QPushButton("Cancel", this);
    destLabel = new QLabel("Destination:", this);
    nameLabel = new QLabel("Name:", this);
    flightLabel = new QLabel("Flight:", this);
    flightLabel2 = new QLabel("Flight:", this);
    destEdit = new QLineEdit(this);
    nameEdit = new QLineEdit(this);
    flightEdit = new QComboBox(this);
    resultView = new QTableView(this);
    resultModel = new QStandardItemModel(this);

    for (int i = 0; i < flights.size(); i++) {
        flightEdit->addItem(QString::fromStdString(flights[i].getFlightNo()));
    }
}

void MainWindow::createLayout()
{
    QVBoxLayout* mainLayout = new QVBoxLayout
(续)

...
    inputLayout->addWidget(destLabel);
    inputLayout->addWidget(destEdit);
    inputLayout->addWidget(nameLabel);
    inputLayout->addWidget(nameEdit);
    inputLayout->addWidget(flightLabel);
    inputLayout->addWidget(flightEdit);
    mainLayout->addLayout(inputLayout);

    QHBoxLayout* buttonLayout = new QHBoxLayout;
    buttonLayout->addWidget(queryButton);
    buttonLayout->addWidget(addButton);
    buttonLayout->addWidget(cancelButton);
    mainLayout->addLayout(buttonLayout);

    mainLayout->addWidget(flightLabel2);
    mainLayout->addWidget(resultView);
    setLayout(mainLayout);
}

void MainWindow::createConnections()
{
    connect(queryButton, SIGNAL(clicked(bool)), this, SLOT(queryFlights()));
    connect(addButton, SIGNAL(clicked(bool)), this, SLOT(addPassenger()));
    connect(cancelButton, SIGNAL(clicked(bool)), this, SLOT(cancelTicket()));
}

MainWindow::~MainWindow()
{
    //save data to file before exit
}

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow w;
    w.show();
    return a.exec();
}

以上是基于C++和QT界面实现航空客运订票系统的一个简单实现。由于本项目较为复杂，实际实现过程可能会因具体需求而有所变化。