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  1. using System;
  2.  
  3. namespace Animals {
  4.     abstract class Animal {
  5.         protected string name;
  6.  
  7.         public Animal(string name) {
  8.             this.name = name;
  9.         }
  10.  
  11.         public virtual void play() { }
  12.     }
  13.  
  14.     class Dog : Animal {
  15.         public Dog(string name) : base(name) {
  16.         }
  17.  
  18.         public override void play() {
  19.             Console.WriteLine("わんわん！" + name + "だよ!");
  20.         }
  21.     }
  22.  
  23.     class Cat : Animal {
  24.         private int sleep;
  25.  
  26.         public Cat(string name, int sleep) : base(name) {
  27.             this.sleep = sleep;
  28.         }
  29.  
  30.         public override void play() {
  31.             Console.WriteLine("にゃあ！" + name + "だよ!");
  32.             if(sleep == 1) {
  33.                 Console.WriteLine("...でも寝る");
  34.             }
  35.         }
  36.     }
  37.  
  38.     class Pet {
  39.         static void Main(string[] args) {
  40.             Animal[] pets = {
  41.             new Dog("ぽち"),
  42.             new Cat("たま", 1)
  43.             };
  44.  
  45.             foreach(Animal pet in pets) {
  46.                 pet.play();
  47.             }
  48.  
  49.         }
  50.     }
  51. }
  52.  
Success #stdin #stdout 0.04s 28660KB
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わんわん！ぽちだよ!
にゃあ！たまだよ!
...でも寝る
https://ideone.com/B4UDF2
language:
C# (NET 6.0)
created:
11 days ago
visibility:
public

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