public static void Main(string[] args)
{
//TODO: Analyze the code repeatedly to fully understand all the OOP concepts used in it.
var shapes = new Shape[] {
new Rectangle (5, 2.5),
new Square (10),
new UnitSquare (),
new Ellipse (11.2, 27.75),
new Circle (15.6)
};
for (int i = 0; i < shapes.Length; i++)
Console.WriteLine (shapes [i]);
}