用C++的类函数写车辆管理系统代码

以下是一个使用类函数实现车辆管理系统的C++代码，包括添加车辆、查看车辆信息、修改车辆信息和删除车辆等功能：

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

class Car {
private:
    string brand;
    string model;
    int year;
    string color;
    string licensePlate;
public:
    // 构造函数
    Car() {}
    Car(string brand, string model, int year, string color, string licensePlate) {
        this->brand = brand;
        this->model = model;
        this->year = year;
        this->color = color;
        this->licensePlate = licensePlate;
    }
    // 成员函数
    void setBrand(string brand) {
        this->brand = brand;
    }
    string getBrand() {
        return brand;
    }
    void setModel(string model) {
        this->model = model;
    }
    string getModel() {
        return model;
    }
    void setYear(int year) {
        this->year = year;
    }
    int getYear() {
        return year;
    }
    void setColor(string color) {
        this->color = color;
    }
    string getColor() {
        return color;
    }
    void setLicensePlate(string licensePlate) {
        this->licensePlate = licensePlate;
    }
    string getLicensePlate() {
        return licensePlate;
    }
};

class CarManager {
private:
    vector<Car> carList;
public:
    void addCar() {
        Car newCar;
        string brand, model, color, licensePlate;
        int year;
        cout << "请输入品牌：";
        cin >> brand;
        newCar.setBrand(brand);
        cout << "请输入型号：";
        cin >> model;
        newCar.setModel(model);
        cout << "请输入生产年份：";
        cin >> year;
        newCar.setYear(year);
        cout << "请输入颜色：";
        cin >> color;
        newCar.setColor(color);
        cout << "请输入车牌号码：";
        cin >> licensePlate;
        newCar.setLicensePlate(licensePlate);
        carList.push_back(newCar);
        cout << "车辆信息已添加！" << endl;
    }
    void viewCar() {
        if (carList.empty()) {
            cout << "没有车辆信息！" << endl;
            return;
        }
        cout << "车辆信息如下：" << endl;
        for (int i = 0; i < carList.size(); i++) {
            cout << "品牌：" << carList[i].getBrand() << endl;
            cout << "型号：" << carList[i].getModel() << endl;
            cout << "生产年份：" << carList[i].getYear() << endl;
            cout << "颜色：" << carList[i].getColor() << endl;
            cout << "车牌号码：" << carList[i].getLicensePlate() << endl;
            cout << endl;
        }
    }
    void modifyCar() {
        if (carList.empty()) {
            cout << "没有车辆信息！" << endl;
            return;
        }
        string licensePlate;
        cout << "请输入要修改的车牌号码：";
        cin >> licensePlate;
        bool found = false;
        for (int i = 0; i < carList.size(); i++) {
            if (carList[i].getLicensePlate() == licensePlate) {
                found = true;
                string brand, model, color;
                int year;
                cout << "请输入新的品牌：";
                cin >> brand;
                carList[i].setBrand(brand);
                cout << "请输入新的型号：";
                cin >> model;
                carList[i].setModel(model);
                cout << "请输入新的生产年份：";
                cin >> year;
                carList[i].setYear(year);
                cout << "请输入新的颜色：";
                cin >> color;
                carList[i].setColor(color);
                cout << "修改成功！" << endl;
                break;
            }
        }
        if (!found) {
            cout << "未找到该车辆！" << endl;
        }
    }
    void deleteCar() {
        if (carList.empty()) {
            cout << "没有车辆信息！" << endl;
            return;
        }
        string licensePlate;
        cout << "请输入要删除的车牌号码：";
        cin >> licensePlate;
        bool found = false;
        for (vector<Car>::iterator it = carList.begin(); it != carList.end(); it++) {
            if (it->getLicensePlate() == licensePlate) {
                found = true;
                carList.erase(it);
                cout << "删除成功！" << endl;
                break;
            }
        }
        if (!found) {
            cout << "未找到该车辆！" << endl;
        }
    }
};

int main() {
    CarManager carManager;
    while (true) {
        cout << "请选择操作：1.添加车辆 2.查看车辆信息 3.修改车辆信息 4.删除车辆 5.退出" << endl;
        int choice;
        cin >> choice;
        switch (choice) {
            case 1:
                carManager.addCar();
                break;
            case 2:
                carManager.viewCar();
                break;
            case 3:
                carManager.modifyCar();
                break;
            case 4:
                carManager.deleteCar();
                break;
            case 5:
                return 0;
            default:
                cout << "无效操作！" << endl;
                break;
        }
    }
}

该代码使用了类`Car`表示车辆信息，使用了类`CarManager`来管理车辆信息。在主函数中，使用了一个死循环，提供了添加车辆、查看车辆信息、修改车辆信息和删除车辆等操作。用户可以根据自己的需要进行选择。