//YAP, JEREMY T

//CCP 1103 - SECTION

//FIBONACCI FREEZE

​

using System;

public class Program

{

    public static void Main(string[] args)

    {

        String inputNumber;

        long fibFreeze;

        long fibNumber = 0;

        long prevNumber = 1;

​

        Console.WriteLine("Fibonacci Freeze");

        Console.WriteLine();

​

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

        inputNumber = Console.ReadLine();

        if (long.TryParse(inputNumber, out fibFreeze) == true)

        {

            if((fibFreeze > 0) && (fibFreeze <= 50))

            {           

                for (long i = 0; i < fibFreeze; i++)

                {

                    long temp = fibNumber;

                    fibNumber = prevNumber;

                    prevNumber = temp + prevNumber;

                }

                Console.WriteLine();

                Console.Write("The Frozen Number for " + inputNumber + " is {0}.", fibNumber);

            }           

            else

            {

                Console.WriteLine();

                Console.Write("Zero, negative, or numbers greater than 50 are not allowed. ");

            }

        }

        else

        {

            Console.WriteLine();

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

        }

    }

}