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  1. using System;
  2. using System.Collections;
  3.  
  4. public class Test
  5. {
  6.     public static IEnumerable Count(int to)
  7.     {
  8.         int from = 1;
  9.         while (from <= to)
  10.             yield return from++;
  11.         yield return "hello world";
  12.     }
  13.  
  14.     public static void Main()
  15.     {
  16.         foreach (int i in Count(5))
  17.             Console.WriteLine(i);
  18.     }
  19. }
Runtime error #stdin #stdout #stderr 0.02s 14008KB
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stdin
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Standard input is empty
stdout
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1
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5
stderr
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Unhandled Exception:
System.InvalidCastException: Specified cast is not valid.
  at Test.Main () [0x00017] in <ff423e5b926846c5aca02d52fa63770c>:0 
[ERROR] FATAL UNHANDLED EXCEPTION: System.InvalidCastException: Specified cast is not valid.
  at Test.Main () [0x00017] in <ff423e5b926846c5aca02d52fa63770c>:0
https://ideone.com/epx61b
language:
C# (gmcs 5.20.1)
created:
6 years ago
visibility:
public

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