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  1. using System;
  2.  
  3. public class Test
  4. {
  5. 	public static void Main()
  6. 	{
  7. 		string str = "2001";
  8.             if (Char.IsDigit(str[0]))
  9.             {
  10.                 Console.WriteLine ("Positive digit");
  11.             }
  12.             else
  13.             {
  14.                 Console.WriteLine ("Not digit");
  15.             }
  16. 	}
  17. }
Success #stdin #stdout 0.02s 33832KB
comments ()
stdin 
Standard input is empty
stdout 
Positive digit
https://ideone.com/fVOybO
language:
C# (gmcs 5.20.1)
created:
12 years ago
visibility:
secret

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