using System;

public class FactorialExample

{       

    public static void Main(string[] args)

    {   bool Valid=false;

        int i,fact=1,number=0;

        Console.Write("Enter any Number: ");

        while (Valid == false)

        {

            string userInput = Console.ReadLine();

            if ((int.TryParse(userInput, out number)) && number > 0)

            {

                Valid = true;

            }

            else

            {

                Console.WriteLine("Error! Try again. Please make sure you enter positive integer");

            }

        }

        Console.Write("Factorial list is : ");

        for(i=1;i<=number;i++)

        {

            fact=fact*i;

            Console.Write(" "+fact+" ");

        }

        Console.WriteLine("\n Factorial of " +number+" is: "+fact);

    }

}