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  1. using System;
  2.  
  3. public class Test
  4. {
  5. 	public static void Main()
  6. 	{
  7. 		int? x = 1;
  8. 		int? y = null;
  9.  
  10. 		Console.WriteLine(x.HasValue);
  11. 		Console.WriteLine(x.Value);
  12. 		Console.WriteLine(y.HasValue);
  13. 		Console.WriteLine(y.Value);
  14. 	}
  15. }
Runtime error #stdin #stdout #stderr 0.06s 26960KB
comments ()
stdin 
Standard input is empty
stdout 
True
1
False
stderr 
Unhandled Exception:
System.InvalidOperationException: Nullable object must have a value.
  at System.Nullable`1[System.Int32].get_Value () [0x00000] in <filename unknown>:0 
  at Test.Main () [0x00000] in <filename unknown>:0 
[ERROR] FATAL UNHANDLED EXCEPTION: System.InvalidOperationException: Nullable object must have a value.
  at System.Nullable`1[System.Int32].get_Value () [0x00000] in <filename unknown>:0 
  at Test.Main () [0x00000] in <filename unknown>:0
https://ideone.com/vk38Qi
Nullable type > HasValue / Value
language:
C# (gmcs 5.20.1)
created:
9 years ago
visibility:
public

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