static void Main(string[] args)
{
// Create Instances of Strategies and Contexts.
Squeak theSqueak = new Squeak ();
Quack theQuack = new Quack ();
MuteQuack theMuteQuack = new MuteQuack ();
FlyWithWings theFly = new FlyWithWings ();
Flyless theFlyless = new Flyless ();
Duck magicDuck = new MallardDuck(theQuack, theFly);
Duck rorschachDuck = new RedheadDuck (theMuteQuack, theFlyless);
// Call functions.
magicDuck.display();
magicDuck.performQuack();
magicDuck.performFly();
Console.Out.WriteLine ();
rorschachDuck.display();
rorschachDuck.performQuack();
rorschachDuck.performFly();
Console.Out.WriteLine ();
// Assign new Strategies to Instances.
magicDuck.QuackBehaviour = theSqueak;
magicDuck.FlyBehaviour = theFlyless;
rorschachDuck.QuackBehaviour = theQuack;
rorschachDuck.FlyBehaviour = theFly;
// Call functions.
magicDuck.display();
magicDuck.performQuack();
magicDuck.performFly();
Console.Out.WriteLine ();
rorschachDuck.display();
rorschachDuck.performQuack();
rorschachDuck.performFly();
Console.In.ReadLine();
}