C++day7

1.

#include 
#include 
#include 
using namespace std;
class Stu
{
public:
    string name;
    int id;
    int age;
    Stu(){}
    Stu(string n,int i,int a):name(n),id(i),age(a){}
    void show()
    {
        cout << "姓名： " << name << endl;
        cout << "学号： " << id << endl;
        cout << "年龄： " << age << endl;
    }
    string get_name()
    {
        return  name;
    }
    int get_id()
    {
        return id;
    }
    int get_age()
    {
        return age;
    }

    ~Stu(){}
};
void printVector(vector &s)
{
    vector::iterator iter;
    for(iter=s.begin();iter!=s.end();iter++)
    {
        iter->show();
    }
}
int main()
{
    Stu s1("zhangsan",1,18);
    Stu s2("lisi",2,18);
    Stu s3("wangwu",3,18);
    vectors;
    s.push_back(s1);
    s.push_back(s2);
    s.push_back(s3);
    ofstream ofs;
    ofs.open("C:/01/02.txt",ios::out);
    vector::iterator iter;
    for(iter=s.begin();iter!=s.end();iter++)
    {
        ofs << iter->get_name() << endl;
        ofs << iter->get_id() << endl;
        ofs << iter->get_age() << endl;
    }
    ofs.close();
    ifstream ifs;
    ifs.open("C:/01/02.txt",ios::in);
    vectorst;
    int a;
    int b;
    char c[1024];
    while(ifs>>c)
    {
        ifs>>a;
        ifs>>b;
        Stu s4(c,a,b);
        st.push_back(s4);
    }
    printVector(st);
    return 0;
}

2.