//BARANDA, REGINE V.

//CCP 1103 - ITCC

//FIBONACCI FREEZE

​

using System;

namespace FibonacciFreeze

{

    public class Program

    {

        public static void Main()

        {

            string input;

            int inputNumber;

            long firstNumber = 0;

            long secondNumber = 1;

            long fibonacciValue = 1;

​

            Console.WriteLine("Fibonacci Freeze");

            Console.Write("Enter a number: ");

            input = Console.ReadLine();

​

            if (Int32.TryParse(input, out inputNumber) == true)

            {

                if (inputNumber <= 0)

                {

                    Console.WriteLine("Zero or negative input is not allowed.");

                }

                else if (inputNumber <= 50)

                {

                    int number = 1;

​

                    for (int i = 0; i < number - 1; i++)

                    {

                        fibonacciValue = firstNumber + secondNumber;

                        firstNumber = secondNumber;

                        secondNumber = fibonacciValue;

                        for (int j = 1; j <= fibonacciValue; j++)

                        {

                            number = j * number;

                        }

                        inputNumber = inputNumber + number;

                    }

​

                    Console.Write("The fibonacci factorial is {0:#,0}.", inputNumber);

                }

                else

                {

                    Console.WriteLine("Input error. Please enter a [1-50] values only.");

                }

            }

            else

            {

                Console.WriteLine("Invalid input. Please enter a numeric value.");

            }

​

        }

    }

}