Write a C# Sharp program that takes three letters as input and display them in reverse order

using System;
public class Exercise1
{
  public static void Main()
  {  
    char letter,letter1,letter2;
  
    Console.Write("Input letter: ");
    letter = Convert.ToChar(Console.ReadLine());
 
    Console.Write("Input letter: ");
    letter1 = Convert.ToChar(Console.ReadLine());       
 
    Console.Write("Input letter: ");
    letter2 = Convert.ToChar(Console.ReadLine());
     
    Console.WriteLine("{0} {1} {2}",letter2,letter1,letter);
   }
}