/////////// PLIK .h /////////////////////////////
#pragma once

#include <string>

class A {
public:
    virtual std::string getName() = 0;
    friend std::string getNameFriend();
};

class B : public A {
public:
    virtual ~B();
    virtual std::string getName();
};

class C : public B {
public:
    virtual ~C();
    virtual std::string getName();
};

///////////////// PLIK .cpp ////////////////////////////////////

#include "stdafx.h"
#include "Paradygmaty1.h"

B::~B()
{
}

std::string B::getName()
{
    return "B";
}

C::~C()
{
}

std::string C::getName()
{
    return "C";
}

std::string getNameFriend()
{
    return "A";
}

///////////////// Main.cpp ///////////////////////////////////////////

#include "stdafx.h"
#include <iostream>
#include <conio.h>
#include "Paradygmaty1.h"


int main()
{
    A *a = new B();
    A *a2 = new C();
    std::cout << getNameFriend() << " -> " << a->getName() << " -> " << a2->getName();

    delete a;
    delete a2;

    _getch();
    return 0;
}