using System;
public class Animal
{
public virtual void Eat()
{
}
}
public class Wolf:Animal
{
public override void Eat()
{
Console.WriteLine(“狼吃肉！”）;
}
}
public class Sheep:Animal
{
public override void Eat()
{
Console.WriteLine(“羊吃草！”);
}
}
class Program
{
static void Main (string[]args)
{
Animal animal1=new Wolf();
Animal animal2=new Sheep();
animal1.Eat();
animal2.Eat();
}
}