/*

 * http://www.dotnetperls.com/char-lookup-table

 *

 * ROT13 

 * is a simple letter substitution cipher that replaces a letter with the letter 13 letters after it in the alphabet. 

 * ROT13 is a special case of the Caesar cipher, developed in ancient Rome.

 * Because there are 26 letters (2×13) in the basic Latin alphabet, ROT13 is its own inverse; that is, to undo ROT13, 

 * the same algorithm is applied, so the same action can be used for encoding and decoding. 

 *

 */

​

using System;

public class Program{

    public static void Main(){

        //Declare string for alphabet

​

            string strAlpha = "";

​

​

            //Loop through the ASCII characters 65 to 90

​

            for (int i = 65; i <= 90; i++) //

​

            {

​

                // Convert the int to a char to get the actual character behind the ASCII code

​

                strAlpha += ((char)i).ToString() + " ";

​

            }

​

​

            //Displaying alphabets

​

            Console.WriteLine(strAlpha);

    }

}