using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine(reversewordinstring("dotnet is easy to learn"));

    }

    public static string reversewordinstring(string str)

    {

        string[] stringArray= str.Split(' ');

     for ( int i=0; i< stringArray.Length; i++)

     { 

         stringArray [i]= stringArray[stringArray.Length-i];

     }

        return string.Join(" ",stringArray);

    }

}