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  1. using System;
  2.  
  3. public class Program
  4. {
  5.     public static void Main()
  6.     {
  7.         int a=2300;
  8.         int? b=null;
  9.  
  10.         var result=(a)-(b);
  11. 		if(result == null){
  12. 			Console.WriteLine("NULL");
  13. 		}
  14.         Console.WriteLine("Result is {0}",result);
  15.     }
  16. }
  17.  
Success #stdin #stdout 0.03s 28060KB
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stdin
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Standard input is empty
stdout
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NULL
Result is
https://ideone.com/opD0li
language:
C# (gmcs 5.20.1)
created:
13 days ago
visibility:
public

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