//GALLARDO, EROS RENE C.

//ABANGAD, NASHRAIN D.

//CCP 1103 - ITCC

//DECIMAL NUMBERS TO OCTAL NUMBERS

using System;

using System.Linq;

public class DecimalToOctal

{

    public static void Main()

    {

        string decimalInput;

        string total;

        int decimalNumber;

        int quotient;

        int counter = 1;

        int[] octalNumber = new int[100];

        Console.WriteLine("Decimal numbers to Octal numbers");

        Console.WriteLine("Enter a decimal number: ");

        decimalInput = Console.ReadLine();

        if(Int32.TryParse(decimalInput, out decimalNumber) == true)

        {

            if(decimalNumber < 1 || decimalNumber > 1000000)

            {

                Console.WriteLine("Invalid input. Please input an integer value.");

            }

            else

            {

                quotient = decimalNumber;

                while(quotient != 0)

                {

                    octalNumber[counter++] = quotient % 8;

                    quotient = quotient / 8;

                }

                Console.Write("The equivalent value of {0:#,0}", decimalNumber);

                Console.Write(" in octal number is ");

                for (int anotherCounter = counter - 1; anotherCounter > 0; anotherCounter--)

                {

                    Console.Write(octalNumber[anotherCounter]);

                }

            }

        }

        else

        {

            Console.WriteLine("Invalid input. Please input an integer value."); 

        }

    }

}