class Product

{

public:

	virtual Product* createClone() = 0;

	virtual void use() = 0;

};

class Apple: public Product

{

	int x;

public:

	Product* createClone()

	{

		return new Apple(*this);

	}

	Apple(int x = 0)

	{

		this->x = x;

	}

	Apple(const Apple& other)

	{

		x = other.x;

	}

	void use()

	{

		cout << "x = " << x << endl;

	}

};

int main()

{

	Product* p1 = new Apple(10);

	Product* p2 = p1->createClone();

	p1->use();

	p2->use();

	return 0;

}