//APOLONIO, ANGELA G.

//CCP1103 - ITDC

//FIBONACCI FREEZE

​

​

using System;

​

namespace FibonacciFreeze

{

    public class Program

    {

        public static void Main(string[] args)

        {

            string number;

            int inputNumber;

            int fibonacciNumber = 0;

            int previousNumber = 1;

​

            Console.WriteLine("Fibonacci Freeze");

            Console.WriteLine();

​

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

            number = Console.ReadLine();

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

            {

                if(inputNumber > 0)

                {

                    for (int i = 0; i < inputNumber; i++)

                    {

                        int counter = fibonacciNumber;

                        fibonacciNumber = previousNumber;

                        previousNumber = counter + previousNumber;

                    }

                    Console.Write("The fibonacci freeze is {0}.", fibonacciNumber);

                }

                else

                {

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

                }

            }

            else

            {

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

            }

        }

    }

}