9_9_4在类库项目Vehicles中编写代码,执行本章前面讨论的对象系列Vehicle,

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace _9_9_4
{
//定义Vehicle基类
public abstract class Vehicle
{
string name;
public void AddPassenger()
{

}
}

//定义基类car
public abstract class Car : Vehicle
{

}

//定义基类Train
public abstract class Train : Vehicle
{

}

//-----------------------------------------------

interface IPassengerCarrier
{

}

interface IHeavyLoadCarrier
{

}

//--------------------------------------------

// 创建IPassengerCarrier的类
public class PassengerTrain : Train,IPassengerCarrier
{

}

public class Compact : Car, IPassengerCarrier
{

}

public class SUV : Car, IPassengerCarrier
{

}

public class Pickup : Car, IPassengerCarrier, IHeavyLoadCarrier
{

}

//创建IHeavyLoadCarrier的类
public class FreightTrain : Train, IHeavyLoadCarrier
{

}

public class _424DoubleBogey : Train
{

}

}