using System;

public class Program

{

    public static void Main()

    {

      string rain = ""; // declared empty string

      while (rain != "yes" && rain != "no")//app will lopp untill user inputs 'yes' or 'no'

      {

        Console.WriteLine("Is it raining outside?");//request input from user

        rain = Console.ReadLine();// user's input will fill the variable 'rain'

​

        if (rain == "yes")// if user's input is 'yes'

        {

          Console.WriteLine("lets stay home and watch a movie");

        }

        else if (rain == "no")// if user's input is 'no'

        {

          Console.WriteLine("fantastic, lets go to the park!");

        }

        else //anything else 

        {

          Console.WriteLine("sorry, I didn't understand that");

        }

​

       }

    }

}