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  1. using System;
  2. public class Test
  3. {
  4.     public class Base {
  5.     }
  6.  
  7.     public class A : Base {
  8.     }
  9.  
  10.     public class B : Base {
  11.     }
  12.  
  13.     public static void Main() {
  14.         A a = new A();
  15.         B b = (B)a;
  16.     }
  17. }
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
prog.cs(15,15): error CS0030: Cannot convert type `Test.A' to `Test.B'
Compilation failed: 1 error(s), 0 warnings
stdout
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Standard output is empty
https://ideone.com/5RgFs
language:
C# (gmcs 5.20.1)
created:
13 years ago
visibility:
public

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