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| using System;
using System.Collections.Generic;
using System.Text;
namespace ConsoleApplication1
{
abstract class FBIAgent
{
public abstract void SendMessage(string m);
public void ReadMessage(string m)
{
Console.WriteLine(m);
}
}
class AgentInRussia : FBIAgent
{
private FBICenter center;
public AgentInRussia(FBICenter f)
{
center = f;
}
public override void SendMessage(string m)
{
center.Send(this, m);
}
}
class AgentInEngland : FBIAgent
{
private FBICenter center;
public override void SendMessage(string m)
{
center.Send(this, m);
}
public AgentInEngland(FBICenter f)
{
center = f;
}
}
abstract class FBICenter
{
public abstract void Send(FBIAgent f, string m);
}
class RealFBICenter : FBICenter
{
private FBIAgent agentinrussia;
private FBIAgent agentinengland;
public FBIAgent russia
{
set { agentinrussia = value; }
}
public FBIAgent england
{
set { agentinengland = value; }
}
public override void Send(FBIAgent f, string m)
{
if (f == agentinengland)
{
agentinrussia.ReadMessage(m);
}
else
{
agentinengland.ReadMessage(m);
}
}
}
class Client
{
public static void Main()
{
RealFBICenter fc = new RealFBICenter();
AgentInEngland eng = new AgentInEngland(fc);
AgentInRussia rus = new AgentInRussia(fc);
fc.england = eng;
fc.russia = rus;
eng.SendMessage("我在英国搞情报，hia~hia~");
rus.SendMessage("我在俄罗斯搞情报，xia~ixa~");
Console.Read();
}
}
}
|
