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  1. using System;
  2.  
  3. public class Test
  4. {
  5. 	class Animal
  6. 	{
  7.  
  8. 	}
  9.  
  10. 	class Dog : Animal
  11. 	{
  12. 		public virtual void woof() { }
  13. 	}
  14.  
  15. 	class Cat : Animal
  16. 	{
  17. 		public virtual void meow() { }
  18. 	}
  19.  
  20. 	public static void Main()
  21. 	{
  22. 		var cat = new Cat();
  23. 		var dog = (Dog)cat;
  24. 		var dog2 = cat as Dog;
  25. 	}
  26. }
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(23,18): error CS0030: Cannot convert type `Test.Cat' to `Test.Dog'
prog.cs(24,18): error CS0039: Cannot convert type `Test.Cat' to `Test.Dog' via a built-in conversion
Compilation failed: 2 error(s), 0 warnings
stdout
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Standard output is empty
https://ideone.com/iYIR7H
language:
C# (gmcs 5.20.1)
created:
9 years ago
visibility:
public

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