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conanak99/bird.cs Secret

Created Apr 25, 2016
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public class Bird {
public virtual void Fly() { Console.Write("Fly"); }
public class Eagle : Bird {
public override void Fly() { Console.Write("Eagle Fly"); }
public class Duck : Bird {
public override void Fly() { Console.Write("Duck Fly"); }
public class Penguin : Bird {
public override void Fly() { throw new NoFlyException(); }
var birds = new List { new Bird(), new Eagle(), new Duck(), new Penguin() };
foreach(var bird in birds) bird.Fly();
// Tới pengiun thì lỗi vì cánh cụt quăng Exception
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