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| using System;
using System.Collections.Generic;
using System.Text;
namespace ConsoleApplication1
{
abstract class Vehicle
{
protected Engine e;
public abstract void Show();
public abstract void InstallEngine(Engine e);
}
class RacingCar : Vehicle
{
public override void Show()
{
Console.WriteLine("跑车");
e.Show();
}
public override void InstallEngine(Engine e)
{
this.e = e;
}
}
class Tractor : Vehicle
{
public override void Show()
{
Console.WriteLine("拖拉机");
e.Show();
}
public override void InstallEngine(Engine e)
{
this.e = e;
}
}
abstract class Engine
{
public abstract void Show();
}
class RacingCarEngine : Engine
{
public override void Show()
{
Console.WriteLine("跑车引擎");
}
}
class TractorEngine : Engine
{
public override void Show()
{
Console.WriteLine("拖拉机引擎");
}
}
class Client
{
public static void Main()
{
Vehicle v = new RacingCar();
v.InstallEngine(new RacingCarEngine());
v.Show();
v = new Tractor();
v.InstallEngine(new TractorEngine());
v.Show();
Console.Read();
}
}
}
|
