在cpp中从文件读入对象

class Person {
public:
    std::string name;
    int age;
};

#include <fstream>

// 创建对象并写入文件
void writeToFile() {
    std::ofstream file("person_data.txt");
    if (file.is_open()) {
        file << "John Doe 25" << std::endl;
        file << "Jane Smith 30" << std::endl;
        file.close();
    }
}

#include <iostream>
#include <fstream>
#include <vector>

// 从文件中读取对象
std::vector<Person> readFromFile() {
    std::vector<Person> people;
    std::ifstream file("person_data.txt");
    if (file.is_open()) {
        std::string line;
        while (std::getline(file, line)) {
            std::stringstream ss(line);
            std::string name;
            int age;

            ss >> name >> age;

            Person person;
            person.name = name;
            person.age = age;

            people.push_back(person);
        }
        file.close();
    }
    return people;
}

int main() {
    // 写入对象数据到文件
    writeToFile();

    // 从文件中读取对象数据
    std::vector<Person> people = readFromFile();

    // 输出读取的对象数据
    for (const auto& person : people) {
        std::cout << "Name: " << person.name << ", Age: " << person.age << std::endl;
    }

    return 0;
}