public static void Main()
{
Shape sh = new Shape(9);
Shape sh1 = new Shape(4, 3);
String a;
a = "ABC";
Shape sha = new Shape();
Console.WriteLine("Square: " + sha.GetArea(2));
Console.WriteLine("Rectangle: " + sha.GetArea(2, 3));
Console.WriteLine(sh.Area());
Console.WriteLine(sh1.Area());
}
public static void PrintArea(Shape s)
{
Console.WriteLine(s.Area());
}