static void Main(string[] args)
{
Animal animal = new Animal();
Animal bird = new Bird();
Animal blackbird = new Blackbird();
Animal sparrow = new Sparrow();
animal.MakeSound();
bird.MakeSound();
blackbird.MakeSound();
sparrow.MakeSound();
Console.WriteLine("-------------------------");
Bird blackbird2 = new Blackbird();
Bird sparrow2 = new Sparrow();
blackbird2.MakeSound();
sparrow2.MakeSound();
///* This gives an error, you can't assign classes as its siblings, only parents. */
//Blackbird sparrow3 = new Sparrow();
Console.ReadLine();
}
public static void Perform()
{
IBird _sparrow = new Sparrow();
IToyDuck _toyDuck = new PlasticToyDuck();
// Wrap a bird in a birdAdapter so that it
// behaves like toy duck
IToyDuck _birdAdapter = new BirdAdapter(_sparrow);
Console.WriteLine("Sparrow...");
_sparrow.Fly();
_sparrow.MakeSound();
Console.WriteLine("Toy Duck");
_toyDuck.Squeak();
// bird behaving like a toy duck
Console.WriteLine("BirdAdapter...");
_birdAdapter.Squeak();
Console.WriteLine();
}
