public static void Main()
{
FlyingSquirrel rocky = new FlyingSquirrel();
Eagle sam = new Eagle();
List <IWalking> birds = new List <IWalking>();
//type squirrel , class squirrel
birds.Add(sam);
//type eagle, class eagle
birds.Add(rocky);
// the foreach will loop through rocky-type FlyingSquirrel , sam-type Eagle
foreach (var thing in birds)
{
//each thing has a type or class, will refer to the method fly in that specific class
// fly method consoles a message
// thing.Fly();
thing.Walk();
}
sam.Fly();
sam.Walk();
sam.AirSpeed = 5;
Console.WriteLine($"sam's airspeed {sam.AirSpeed}");
}
static void Main(string[] args)
{
// Naming conventions in c#:
// PascalCase (TitleCase)
// for classes, methods, properties, namespaces
// CamelCase for local variables
Dog dog = new Dog();
dog.Bark();
// Using fields and properties
// Using getters and setters with private field.
dog.SetWeight(6);
System.Console.WriteLine(dog.GetWeight());
dog.Name = "Fido";
System.Console.WriteLine(dog.Name);
dog.Breed = "Golden Retriever";
dog.GoTo("The park");
Console.WriteLine("Hello World!");
// ********
IAnimal animal = new Dog();
animal = new Eagle();
// This is okay since both classes are an IAnimal type
// But you are not allowed to do dog/eagle specific
// things via this variable
//animal.Fly(); // Will not work.
// You can cast objects to specific types
// Will fail at run-time if object is not the
// correctly casted type.
Eagle e = (Eagle)animal;
e.Fly();
// Superclass = base class = parent class
// subclass = derived class = child class
DisplayName(new Dog());
DisplayName(new Eagle());
}
