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  1. using System;
  2. using Animals;
  3.  
  4. class Pet {
  5.     static void Main(string[] args) {
  6.         Animal[] pets = {
  7.             new Dog("ぽち"),
  8.             new Cat("たま", 1)
  9.         };
  10.  
  11.         foreach(Animal pet in pets) {
  12.             pet.play();
  13.         }
  14.     }
  15. }
  16.  
  17. namespace Animals {
  18.     abstract class Animal {
  19.         protected string name;
  20.  
  21.         public Animal(string name) {
  22.             this.name = name;
  23.         }
  24.  
  25.         public virtual void play() { }
  26.     }
  27.  
  28.     class Dog : Animal {
  29.         public Dog(string name) : base(name) {
  30.         }
  31.  
  32.         public override void play() {
  33.             Console.WriteLine("わんわん！" + name + "だよ");
  34.         }
  35.     }
  36.  
  37.     class Cat : Animal {
  38.         private int sleep;
  39.  
  40.         public Cat(string name, int sleep) : base(name) {
  41.             this.sleep = sleep;
  42.         }
  43.  
  44.         public override void play() {
  45.             Console.WriteLine("にゃあ！" + name + "だよ");
  46.             if(sleep == 1) {
  47.                 Console.WriteLine("...でも寝る");
  48.             }
  49.         }
  50.     }
  51. }
  52.  
Success #stdin #stdout 0.05s 28636KB
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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/lqAFAR
language:
C# (NET 6.0)
created:
11 days ago
visibility:
public

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