using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        Console.WriteLine(ReverseWords("Hello! How are you?"));

    }

    //INput: Hello! How are you?

    //Output: you? are How Hello!

    public static string ReverseWords(string input)

    {

       //code here

        return "";

    }

}

​

​