OOP2 Encapsulation (C++)

#include <cstdlib>

#include <iostream>

using namespace std;

class A

{

public :

    virtual void Nama(string nm) = 0;

    virtual void NIM(int nim) = 0;

};

class B : public A

{

public :

    void Nama(string nm)

    {

        cout << "Nama Mahasiswa = "<<nm << endl;

    }

    void NIM(int nim)

    {

        cout << "NIM = "<<nim << endl;

    }

};

int main(int argc, char *argv[])

{

B b;

b.Nama("Joko Prasetyo");

b.NIM(1113101102);

system("PAUSE");

return EXIT_SUCCESS;

}