using System;

public class Program

{

    public static void Main()

    {

        string choice = "This value doesn't matter";

        while (choice != "n" && choice != "N")

        {

        start:

        Console.WriteLine("How much numbers would you like to know the square root of?");

            string values = Console.ReadLine();

        double number;

        if (double.TryParse(values, out number))

        {

            if (number<0)

            {

                Console.WriteLine("Please enter a positive number");

                goto start;

            }

            double i = 1;

            do

            {

                Console.WriteLine("The square root of " +i+ " is = " +Math.Sqrt(i).ToString("##.##"));

                i++;

            }

            while (i<=number);

        }       

            else 

                    Console.WriteLine("Enter a positive number");

                    Console.WriteLine(" ");

                    Console.Write("Press y to continue Press n to stop");

                    choice = Console.ReadLine();

                    Console.Clear();

                    }   }

        }