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 many numbers would you like to calculate the square root of?");

            string numbers = Console.ReadLine();

            double sqrt;

            if (double.TryParse(numbers, out sqrt) && sqrt > 0)

            {

                double i = 1;

                do

                {

                    Console.WriteLine(" ");

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

                    i++;

                }

                while (i <= sqrt);

                Console.WriteLine("");

                Console.WriteLine("Would you like to run the program again? y/n");

                choice = Console.ReadLine();

            }

            else

            {

                Console.WriteLine("Please enter a positive integer value.");

                goto start;

            }

        }

    }

}