private static void DrawCircle()
{
IShape circle = new Circle();
circle.Draw();
Console.WriteLine("Object of type circle stored in a variable of type IShape\n");
Console.WriteLine("*********************************\n");
}
private static void AssignDifferentTypesToSameInstanceVariable()
{
Console.WriteLine("Instance variable holds a type of circle, and then a type of rectangle. The draw methods change\n");
IShape shape = new Circle();
Console.WriteLine("The object variable is of type IShape,\nand is holding an instance of a Circle.\n");
shape.Draw();
Console.WriteLine("The object variable is of type IShape,\nbut is now holding an instance of a Rectangle.\n");
shape = new Rectangle();
shape.Draw();
}