virtual ~sugar(){};
private:
	sugar(const sugar & csugar);
	sugar& operator= (sugar const & sugar);

_________

	virtual ~whippedcream(){};

private:
	whippedcream(const whippedcream & cwhipped);
	whippedcream& operator= (whippedcream const & whipped);

_________
	virtual ~soiamilk(){};

private:
	soiamilk(const soiamilk & csoia);
	soiamilk& operator= (soiamilk const & soia);

______

	virtual ~milk(){};
private:
	milk(const milk & cmilk);
	milk& operator= (milk const & omilk);