code/HeSai/test2.cpp

#include <iostream>
#include <cstring>
#include <vector>
using namespace std;
struct student
{
    string name;
    int old;
    int nianji;
};

int main(){
    student student1 = {"xiaoming", 10, 2};
    student student2 = {"xiaolan", 12, 4};
    student student3 = {"xiaohong", 12, 8};
    string name;
    int old, nianji,j,i;
    student studentx;
    vector<student> aa;

    aa.push_back(student1);
    aa.push_back(student2);
    aa.push_back(student3);

    cout<<"please input the student name"<<endl;
    cin>>name;
    cout<<"please input the student old"<<endl;
    cin>>old;
    cout<<"please input the student nianji"<<endl;
    cin>>nianji;

    studentx.name = name;
    studentx.old = old;
    studentx.nianji = nianji;

    for(i = 0; i < aa.size(); i++){
        if(studentx.nianji > aa[i].nianji)continue;
        student tmp = aa[i];
        aa[i] = studentx;
        // cout<<"i = "<<i<<endl;
        aa.push_back(studentx);
// cout<<"size "<<aa.size()<<endl;
        for(j = aa.size() - 1; j > i + 1; j--){
            cout<<"1111111111111111111"<<endl;
            aa[j] = aa[j - 1];
            cout<<"122222222222222"<<endl;
        }
        cout<<"122222222222222"<<endl;
        aa[j--] = tmp;
        break;
    }

    if(i == aa.size())aa.push_back(studentx);



    for(i = 0; i < aa.size(); i++){
        cout<<aa[i].name<<endl;
    }
    return 0;
}