OOP static function

#include <iostream>
#include <cstdio>

using namespace std;


class diy{



    public:
        string name;
        int id;

    void loop(int n);

    static void display(){
        /*static function must be in public*/
        /*static function call without object create*/

        cout<<"amar sonar banagla";
        }
};


void diy::loop(int n){

        for(int i=0; i<n; i++)
            cout<<n<<" ";
    cout<<"\n";
}



int main(int argc, char **argv)
{
    diy :: display();

    return 0;
}