4 array of a object

#include <iostream>
using namespace std;
class student{
    int roll;
    public:
    void getdata() {
        cout<<"enter your roll no ";
        cin>>roll;
    }
    void display() {
        cout<<"roll no "<<roll;
    }
};
int main()
{
    student s[3];
    for(int i=0 ; i<3 ; i++){
        s[i].getdata();
        s[i].display();
        cout<<"\n";
    }
    return 0;
}
/*
Output
enter your roll no 1
roll no 1
enter your roll no 2
roll no 2
enter your roll no 3
roll no 3
*/