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  1. using System;
  2. using System.Threading;
  3. using System.Diagnostics;
  4. using System.Text;
  5. using System.Collections.Generic;
  6.  
  7. namespace Example
  8. {
  9.     class Program
  10.     {
  11.         static void Main(string[] args)
  12.         {
  13.             List<A> list = new List<A>();
  14.             list.Add(new B("anton", 25));
  15.             list.Add(new C("anton", 0, 545));
  16.             list.Add(new D("anton", 25, 545, 545474));
  17.             list.Add(new B("anhjyton", 25));
  18.             list.Add(new C("anton", 25, 545));
  19.             list.Add(new C("antofn", 25, 1111));
  20.             foreach (A item in list)
  21.             {
  22.                 B b = item as B;
  23.                 if (b != null)
  24.                 {
  25.  
  26.                     Console.WriteLine($"{b.Name} {b.age}");
  27.                 }
  28.  
  29.                 C c = item as C;
  30.                 if (c != null)
  31.                 {
  32.                     Console.WriteLine($"{c.Name} {c.age} {c.money}");
  33.                 }
  34.  
  35.                 D d = item as D;
  36.                 if (d != null)
  37.                 {
  38.  
  39.                     Console.WriteLine($"{d.Name} {d.age} {c.money} {d.SSN}");
  40.                 }
  41.  
  42.             }
  43.         }
  44.     }
  45.     abstract class A
  46.     {
  47.         public string Name { get; set; }
  48.  
  49.         public A(string name)
  50.         {
  51.             Name = name;
  52.         }
  53.     }
  54.     class B : A
  55.     {
  56.         public int age { get; set; }
  57.         public B(string name, int age)
  58.             : base(name)
  59.         {
  60.             this.age = age;
  61.         }
  62.     }
  63.     class C : B
  64.     {
  65.         public int money { get; set; }
  66.         public C(string name, int age, int money)
  67.             : base(name, age)
  68.         {
  69.             this.money = money;
  70.         }
  71.     }
  72.     sealed class D : C
  73.     {
  74.  
  75.         public D(string name, int age, int money, int SSN)
  76.             : base(name, age, money)
  77.         {
  78.             this.SSN = SSN;
  79.         }
  80.  
  81.         public int SSN { get; set; }
  82.     }
  83. }
Success #stdin #stdout 0.02s 16104KB
comments (?)
stdin
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Standard input is empty
stdout
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anton 25
anton 0
anton 0 545
anton 25
anton 25 545
anton 25 545 545474
anhjyton 25
anton 25
anton 25 545
antofn 25
antofn 25 1111
https://ideone.com/DI8nN7
language:
C# (gmcs 5.20.1)
created:
3 years ago
visibility:
public

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