新手 如何用C++编写类实现相关信息输出

#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
class Student {
    private:
        string no;
        string name;
        int score;
    public:
        Student(){}
        Student(string no,string name,int score);
        void display();
        static bool comparator(Student a,Student b){
            if(a.score!=b.score){
                return a.score<b.score;
            }
            return a.no<b.no;
        }
        
};

Student::Student(string _no,string _name,int _score){
    no=_no;
    name=_name;
    score=_score;
}
void Student::display(){
    cout<<no<<'\t'<<name<<'\t'<<score<<endl;
}
int main() {
    vector<Student> stus;
    for(int i=0;i<4;i++){
        string no="";
        cout<<"请输入第"<<(i+1)<<"个学生的学号:";
        cin>>no;
        string name="";
        cout<<"请输入第"<<(i+1)<<"个学生的姓名:";
        cin>>name;
        int score=0;
        cout<<"请输入第"<<(i+1)<<"个学生的成绩:";
        cin>>score;
        Student stuEle(no,name,score);
        stus.push_back(stuEle);
        cout<<endl;
    }
    sort(stus.begin(),stus.end(),Student::comparator);
    cout<<"No\tName\tScore"<<endl;
    for(int i=0;i<stus.size();i++){
        stus[i].display();
    }
     
    return 0;
}