using System;

public class Program

{

    public static void Main()

    {

        start:

Console.Clear();

ulong fact = 1;

for(ulong i = 1; i <= 6; i++)

    {fact *=i;}

Console.WriteLine("6! =" + fact);

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

                               string choice = Console.ReadLine();

                          if (choice == "y" || choice == "Y")

    goto start;

​

​

    }

}