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| using System;
using System.Collections.Generic;
using System.Text;
namespace ConsoleApplication1
{
abstract class Officer
{
protected Officer myboss;
public Officer(Officer o)
{
myboss = o;
}
public abstract void Deal(Action a);
}
class PoliceMan : Officer
{
public PoliceMan(Officer o)
: base(o)
{
}
public override void Deal(Action a)
{
if (a == Action.逮捕罪犯)
{
Console.WriteLine("我是警察，我去逮捕罪犯");
}
else if (myboss != null)
{
myboss.Deal(a);
}
}
}
class FBI : Officer
{
public FBI(Officer o)
: base(o)
{
}
public override void Deal(Action a)
{
if (a == Action.暗杀)
{
Console.WriteLine("我是FBI，我去暗杀");
}
else if (myboss != null)
{
myboss.Deal(a);
}
}
}
class Precident : Officer
{
public Precident(Officer o)
: base(o)
{
}
public override void Deal(Action a)
{
if (a == Action.干掉萨达姆)
{
Console.WriteLine("我是总统，我去找人干掉萨达姆");
}
else if (myboss != null)
{
myboss.Deal(a);
}
}
}
enum Action
{
逮捕罪犯,
暗杀,
干掉萨达姆
}
class Client
{
public static void Main()
{
Officer police = new PoliceMan(new FBI(new Precident(null)));
police.Deal(Action.逮捕罪犯);
police.Deal(Action.暗杀);
police.Deal(Action.干掉萨达姆);
Console.Read();
}
}
}
|
