static void Main(string[] args)
{
Duck myduck = new MallardDuck();
myduck.display();
myduck.performFly();
myduck.performQuack();
myduck = new RedHeadDuck();
myduck.display();
myduck.performFly();
myduck.performQuack();
myduck = new RubberDuck();
myduck.display();
myduck.performFly();
myduck.performQuack();
myduck = new DecoyDuck();
myduck.display();
myduck.performFly();
myduck.performQuack();
myduck.setFlyBehavior(new FlyJet());
myduck.performFly();
}
static void Main(string[] args)
{
Duck duck = new MarroldDuck();
duck.display();
duck.performQuack();
duck.performFly();
duck = new RubberDuck();
duck.display();
duck.performQuack();
duck.performFly();
}