int main()
{
	using namespace Graph_lib;
	Simple_window win {Point{100, 100}, 800, 600, "Exercise 9"};
	Checker ck {50};
	ck.set_color(Color::green);

	Circle c {Point{200, 200}, 30};
	c.set_color(Color::black);
	c.set_fill_color(Color::white);

	Rectangle r {Point{100, 50}, 30, 40};
	r.set_color(Color::red);
	r.set_fill_color(Color::yellow);

	ck.add_shape(c);
	ck.add_shape(r);
	ck.move(0, 4, 1);
	ck.move(1, 5, 3);
	win.attach(ck);
	win.attach(ck.shape(0));
	win.attach(ck.shape(1));

	win.wait_for_button();
}