用c++完成电瓶车租赁管理系统，包含增删改查，用到文件读写

在C++中创建一个简单的电动车租赁管理系统，可以利用文件I/O功能来存储数据。我们将创建一个类`ElectricBike`表示电动车，以及几个成员函数来处理租借（Rent）、归还（Return）、添加（Add）和删除（Delete）操作。这里是一个基本的框架：

#include <iostream>
#include <fstream>
#include <string>

class ElectricBike {
private:
    int bikeId;
    std::string bikeName;
    bool isRented;

public:
    // 构造函数
    ElectricBike(int id, const std::string& name) : bikeId(id), bikeName(name), isRented(false) {}

    // 添加自行车到文件
    static void addToFile(const ElectricBike& bike, const std::string& filename) {
        std::ofstream file(filename, std::ios_base::app);
        if (file.is_open()) {
            file << bike.bikeId << "," << bike.bikeName << "," << bike.isRented << "\n";
            file.close();
        }
    }

    // 从文件中读取并返回所有自行车
    static std::vector<ElectricBike> readFromFile(const std::string& filename) {
        std::ifstream file(filename);
        std::vector<ElectricBike> bikes;
        if (file.is_open()) {
            std::string line;
            while (std::getline(file, line)) {
                std::istringstream iss(line);
                int id, rented;
                std::string name;
                iss >> id >> name >> rented;
                bikes.push_back(ElectricBike(id, name, rented));
            }
            file.close();
        }
        return bikes;
    }

    // 执行操作（这里简化为打印信息）
    void rent() { isRented = true; std::cout << "Bike " << bikeId << " has been rented.\n"; }
    void returnBike() { isRented = false; std::cout << "Bike " << bikeId << " returned.\n"; }
};

int main() {
    // 示例操作
    ElectricBike bike1(1, "Eco-Electric");
    ElectricBike::addToFile(bike1, "bikes.txt");

    // 从文件读取并显示所有车辆状态
    std::vector<ElectricBike> allBikes = ElectricBike::readFromFile("bikes.txt");
    for (const auto& bike : allBikes) {
        if (bike.isRented)
            std::cout << "Bike " << bike.bikeId << " is currently rented.\n";
        else
            std::cout << "Bike " << bike.bikeId << " is available.\n";
    }

    return 0;
}