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

namespace InterfaceProject
{
  /// <summary>
  /// 动物接口
  /// </summary>
  interface IAnimal
  {
    /// <summary>
    /// 动物叫喊
    /// </summary>
    void Shout();
  }
}

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

namespace InterfaceProject
{
  /// <summary>
  /// 狗
  /// </summary>
  public class Dog:IAnimal
  {
    public void Shout()
    {
      Console.WriteLine("汪汪汪");
    }
  }
}

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

namespace InterfaceProject
{
  /// <summary>
  /// 猫
  /// </summary>
  public class Cat:IAnimal
  {
    public void Shout()
    {
      Console.WriteLine("喵喵喵");
    }
  }
}

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

namespace InterfaceProject
{
  /// <summary>
  /// 猪
  /// </summary>
  public class Pig:IAnimal
  {
    public void Shout()
    {
      Console.WriteLine("猪怎么叫来着？？猪叫");
    }
  }
}

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

namespace InterfaceProject
{
  class Program
  {
    static void Main(string[] args)
    {
      //百兽齐鸣(这里可以使用反射来初始化所有继承IAnimal的所有动物，我就不写这个了，主要看接口)
      List<IAnimal> animals = new List<IAnimal>();
      IAnimal dog = new Dog();
      animals.Add(dog);
      IAnimal cat = new Cat();
      animals.Add(cat);
      IAnimal pig = new Pig();
      animals.Add(pig);
      //所有动物都叫一遍
      for (int i = 0; i < animals.Count; i++)
      {
        animals[i].Shout();
      }

      
    }
  }
}