using System;

​

public class Program

{

    public static void Main()

    {

        string str = "", reverse = "";

        int Length = 0;

        Console.WriteLine("Enter a Word");

        //Getting String(word) from Console  

        str = Console.ReadLine();

        //Calculate length of string str  

        Length = str.Length - 1;

        while (Length >= 0)

        {

            reverse = reverse + str[Length];

            Length--;

        }

​

        //Displaying the reverse word  

        Console.WriteLine("Reverse word is {0}", reverse);

        Console.ReadLine();

    }

}