9.8作业

1.实现封装一个学生的类，定义一个学生这样类的vector容器, 里面存放学生对象（至少3个） 再把该容器中的对象，保存到文件中。再把这些学生从文件中读取出来，放入另一个容器中并且遍历输出该容器里的学生

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

using namespace std;

class Stu
{
public:
    string name;
    string sex;
    int age;
    double score;

    Stu(){};
    Stu(string name,string sex,int age,double score):name(name),sex(sex),age(age),score(score)
    {}

};

ostream &operator<<(ostream &cout,const Stu &s)
{
    cout << s.name << " " << s.sex << " " << s.age << " " << s.score << endl;
    return cout;
}

istream &operator>>(istream &cin,Stu &s)
{
    cin >> s.name >> s.sex >> s.age >> s.score;
    return cin;
}


int main()
{
    vector<Stu> s;
    s.push_back(Stu("LL","man",22,99));
    s.push_back(Stu("ZY","man",18,96));
    s.push_back(Stu("CC","woman",19,91));
    s.push_back(Stu("XY","woman",17,88));
    s.push_back(Stu("SX","woman",23,100));

    ofstream ofs;
    ofs.open("E:/HQYJ/C++/day8/zy1/stu.txt",ios::out);

    for(const auto &s : s)
    {
        ofs << s <<endl;
    }

    ofs.close();

    vector<Stu> loadStu;

    ifstream ifs;

    ifs.open("E:/HQYJ/C++/day8/zy1/stu.txt",ios::in);

    Stu temp;
    while(ifs >> temp)
    {
        loadStu.push_back(temp);
    }

    ifs.close();

    for(const auto &s : loadStu)
    {
        cout << s << endl;
    }

    return 0;
}

2.思维导图