static void Main(string[] args)
{
// Polymorphism
Animal animal1 = new Dog();
animal1.Talk(); // Wuw!
Console.WriteLine("animal1 has {0} legs.", animal1.Legs); // animal1 has 4 legs.
Console.WriteLine("animal1 type is {0}.", animal1.GetType()); // animal1 type is PolymorphismApplication.Dog
// Polymorphism
Animal animal2 = new Cat();
animal2.Talk(); // Miaum!
Console.WriteLine("animal2 has {0} legs.", animal2.Legs); // animal2 has 4 legs.
Console.WriteLine("animal2 type is {0}.", animal2.GetType()); // animal2 type is PolymorphismApplication.Cat
// Polymorphism
Animal animal3 = new Chicken();
animal3.Talk(); // CotCot!
Console.WriteLine("animal3 has {0} legs.", animal3.Legs); // animal3 has 2 legs.
Console.WriteLine("animal3 type is {0}.", animal3.GetType()); // animal3 type is PolymorphismApplication.Chicken
// a lot of different animals in a list
List <Animal> animals = new List <Animal>();
animals.Add(new Dog());
animals.Add(new Cat());
animals.Add(new Rooster());
animals.Add(new Chicken());
animals.Add(new Dog());
animals.Add(new Cat());
animals.Add(new Chicken());
animals.Add(new Dog());
animals.Add(new Cat());
animals.Add(new Chicken());
animals.Add(new Rooster());
// virtual method talk is invoked on each of the derived classes, not the base class.
foreach (Animal animal in animals)
{
// note we can handle this with one talk-method!
animal.Talk();
if (animal is Chicken)
{
Console.WriteLine("This one is a chicken.");
Chicken chicken = animal as Chicken;
chicken.Talk();
}
//Console.WriteLine("ANIMAL IS: " + animal.GetType());
}
}