(深入.Net平台和C#编程)第六章.简答题3.20170410

---------------------------------------父类Animals类---------------------------------------

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

namespace JD.entity
{
    /// <summary>
    /// 动物类
    /// </summary>
    public class Animals
    {
        /// <summary>
        /// 名字
        /// </summary>
        public string Name { get; set; }
        /// <summary>
        /// 颜色
        /// </summary>
        public string Color { get; set; }
        public Animals(string name,string color)
        {
            this.Name = name;
            this.Color = color;
        }
    }
}

---------------------------------------子类Cat类---------------------------------------

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

namespace JD.entity
{
    /// <summary>
    /// 猫类
    /// </summary>
   public class Cat:Animals
    {
       public Cat(string name ,string color):base(name,color)
       {
           
       }
       public void Bark()
       {
           Console.WriteLine("是{0}猫{1},喵喵",base.Color,base.Name);
       }
    }
}

---------------------------------------子类Dog类---------------------------------------

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

namespace JD.entity
{
    /// <summary>
    /// 狗类
    /// </summary>
    public class Dog:Animals
    {
        public Dog(string name ,string color):base(name,color)
       {
           
       }
        public void Bark()
        {
            Console.WriteLine("是{0}狗{1},旺旺", base.Color, base.Name);
        }
    }
}

---------------------------------------主类Main方法---------------------------------------

using JD.entity;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace JD
{
    class Program
    {
        static void Main(string[] args)
        {
            //动物
            List<Animals> listAnimals = new List<Animals>();

            //添加Cat
            listAnimals.Add(new Cat("加菲","红色"));
            listAnimals.Add(new Cat("变色","黄色"));

            //添加Dog
            Dog d = new Dog("泰迪","黑色");
            Dog d1 = new Dog("大黄","黄色");
            listAnimals.Add(d);
            listAnimals.Add(d1);
            //遍历
            foreach (var item in listAnimals)
            {
                //判断
                if (item is Dog)
                {
                    ((Dog)item).Bark();
                }
                if (item is Cat)
                {
                    ((Cat)item).Bark();
                }
            }
        }
    }
}