小编arc*_*nch的帖子

请考虑以下代码:

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

namespace TestApp
{
    interface IMammalClass
    {
        string Speak();
    }

    public abstract class absMammalClass : IMammalClass
    {
        public abstract string Speak();
    }

    public class basePetClass : absMammalClass
    {
        public virtual override string Speak()
        {
            return "Make Noise";
        }
    }

    public class DogClass : basePetClass
    {
        public override string Speak()
        {
            return "Bark";
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            DogClass spot = new DogClass();
            Console.Out.WriteLine(spot.Speak());
        }
    } …