int main() {
	Objet* tab[3];
	Cercle c(10,20,5);
	Rectangle r(7,3,8,4);
	c.move(30,40);
	tab[0] = &c;
	tab[0]->move(20, 10);
	std::cout<<c.area();
	std::cout<<tab[0]->area();
}