C++ Constructor Initialization

#include<iostream>

using namespace std;

class anik

{

public :

    const int adf;

    const int xmf;

    int z;

    anik(int x, int y, int a)

    : adf (x), xmf (y)

    {

        cout << "Admission Fee : " << x << endl;

        cout << "Exam Fee : " << y << endl;

        z = a;

        cout << "ID : " << a << endl;

    }

};

int main()

{

    anik a(15000, 500, 101);

    return 0;

}