fork download
copy 
  1. using System;
  2. using System.Linq;
  3.  
  4. public class Test
  5. {
  6. 	public static void Main()
  7. 	{
  8. 	    string cardNumber = "1234567890123456";
  9.         var subStrings = Enumerable.Range(0, 4).Select(n => cardNumber.Substring(n * 4, 4)).ToArray();
  10.         var result = String.Format("{0}-{1}-{2}-{3}", subStrings);
  11.         Console.WriteLine(result);
  12. 	}
  13. }
Success #stdin #stdout 0.03s 24176KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
1234-5678-9012-3456
https://ideone.com/xId4jH
language:
C# (gmcs 5.20.1)
created:
9 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!