Reverse String

using System;

class ReverseStringLetters
{
  //Write a program that reads a string, reverses it and prints the result at the console.
  //Example: "sample" -> "elpmas".

  static void Main()
  {
    Console.WriteLine("Enter a string to reverse: ");
    string input = Console.ReadLine();

    for (int i = input.Length - 1; i >= 0; i--)
    {
      Console.Write(input[i]);
    }
    Console.WriteLine();
  }
}