static void Main(string[] args)
{
FlyingCar car = new FlyingCar();
car.Run();
car.Fly();
IRunnable runnable = car;
runnable.Run();
IFlyable flyable = (IFlyable)car;
flyable.Fly();
}
static void Main(string[] args)
{
FlyingCar car = new FlyingCar();
car.Run();
car.Fly();
IRunnable runable = car;
runable.Run();
IFlyable flyable = new FlyingCar();
flyable.Fly();
FlyingCar car2 = flyable as FlyingCar;
car2.Run();
car2.Fly();
}