using System;

public class Program

{

    public static string answerYorN (string y, string n)

        bool validAnswer = false;

    while  (validAnswer)

    {

    Console.WriteLine(" please enter y or n: ");

        if (response == y; response ==n)

        {

        // incomplete code 

        }

    }

    public static void Main()

    {

        Console.WriteLine(" Is the weather nice? ");

        response = Console.WriteLine;

    }

}