using System;

​

public class Program

{

    public static void Main()

    {

        string choice = "This is a goto statement.";

        while (choice != "q" && choice != "Q")

        {

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

            redo:

                string input = Console.ReadLine();

            ulong n;

            Console.Clear();

            if (ulong.TryParse(input, out n))

            {

                Console.Write(n + " is divisible by: ");

                for (ulong i = 1; i <= 100; i++)

                {

                    if (n % i == 0)

                        Console.Write(i + "   ");

                }

            }

            else

            {

                Console.WriteLine("Please be sure to enter a positive integer.");

                goto redo;

            }

​

            Console.WriteLine("\nPress q to quit or any other key to continue.");

            choice = Console.ReadLine();

        }

    }

}