namespace Test
{
class Program
{
static void Main(string[] args)
{
//作业:橡皮rubber鸭子、木wood鸭子、真实的鸭子realduck。
//三个鸭子都会游泳，而橡皮鸭子和真实的鸭子都会叫，
//只是叫声不一样，橡皮鸭子“唧唧”叫，真实地鸭子“嘎嘎”叫，木鸭子不会叫. Duck dk = new RealDuck();
dk.Swim();
IBark ib = new RealDuck();
ib.Bark();
Console.ReadKey();
}
}
//为抽象类
public abstract class Duck
{
public abstract void Swim();
}
//接口
public interface IBark
{
void Bark();
} public class RealDuck : Duck, IBark
{
public void Bark()
{
Console.WriteLine("真的鸭子嘎嘎叫");
} public override void Swim()
{
Console.WriteLine("真的鸭子会游泳");
}
} public class MuDuck : Duck
{
public override void Swim()
{
Console.WriteLine("木头鸭子也会游泳");
}
} public class XPDuck : Duck, IBark
{
public void Bark()
{
Console.WriteLine("橡皮鸭子唧唧叫");
} public override void Swim()
{
Console.WriteLine("橡皮鸭子也会游泳");
}
}
}