static void Main(string[] args)
{
Shape rect = new Rectangle(2, 5);
Shape circle = new Circle(2);
CompositeShapeAdd c = new CompositeShapeAdd();
c.Add(rect);
c.Add(circle);
PrintArea(c);
}
public void VisitRectangle(Rectangle a_rect)
{
System.Console.WriteLine("Rectanlge");
}