static ShapeAbstract shapeAbs; //null
static void AbstractExample()
{
Console.WriteLine("1 for Rectangle\n2 for Square");
var choice = Console.ReadLine();
switch (choice)
{
case "1":
shapeAbs = new RectangleAbstract();
break;
case "2":
shapeAbs = new SquareAbstract();
break;
case "3":
//shape = new Circle();
break;
default:
break;
}
shapeAbs.DisplayIntro();
shapeAbs.GetInput();
shapeAbs.DisplayArea();
shapeAbs.DisplayPerimeter();
}
