using System;

​

public class Program

{

    public static void Main()

    {

        string choice = "";

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

        {

            Console.WriteLine("How many square roots would you like to see?");

            string sans = Console.ReadLine();

            Console.Clear();

            double i;

            if (double.TryParse(sans, out i))

            {

                if (i >= 1)

                {

                    double num = 1;

                    do

                    {

                        Console.WriteLine("The Square Root of " + num + " is: " + Math.Sqrt(num).ToString("##.###"));

                        num++;

                    }

                    while (num <= i);

                    Console.WriteLine();

                    Console.WriteLine("Do you want to restart the program?");

                    choice = Console.ReadLine();

                    Console.Clear();

                }

                else if (i <= 0)

                {

                    Console.Clear();

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

                }

            }

            else

            {

                Console.Clear();

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

            }

        }

    }

}