ООП ЛБ 3

// Базовый класс фигуры
class Shape {
protected:
	//В нем определены начальная точка фигуры
	double x;
	double y;
public:
	Shape(double x = 0,double y=0)
	{
		this->x = x;
		this->y = y;
	}
	Shape(const Shape& other)
	{
		this->x = other.x;
		this->y = other.y;
	}
	Shape(Shape&& other) noexcept
	{
		this->x = other.x;
		this->y = other.y;
	}
	// Виртуальная функция для вычисления площади
	virtual double fig_area();
};

class Circle : public Shape {
private:
	double r;
public:
	Circle(double x = 0, double y = 0, double r=1)
	{
		this->x = x;
		this->y = y;
		this->r = r;
	}
	Circle(const Circle& other)
	{
		this->x = other.x;
		this->y = other.y;
		this->r = other.r;
	}
	Circle(Circle&& other) noexcept
	{
		this->x = other.x;
		this->y = other.y;
		this->r = other.r;
	}
	double fig_area() override {
		return pow(r, 2.0)*PI;
	}
};