FlipTheNumber_2.0

using System;

namespace FlipTheNumber
{
    class Program
    {
        static void Main(string[] args)
        {

            int number = 0;
            int hundreds = 0;
            int dozens = 0;
            int ones = 0;
            int firstDigit = 0;
            int secondDigit = 0;
            int thirdDigit = 0;
            string result = null;

            Console.WriteLine("Enter a three-digit number:");
            number = Convert.ToInt32(Console.ReadLine());

            hundreds = number;

            for (int i = 1; i < 10; i++)
            {
                hundreds -= 100;
                if (hundreds < 100)
                {
                    firstDigit = i;
                    if (hundreds < 10)
                    {
                        dozens = 0;
                        secondDigit = 0;
                        i = 10;
                    }
                    else
                    {
                        dozens = hundreds;
                        i = 10;
                    }
                }
            }

            for (int i = 1; i < 10; i++)
            {
                if (dozens != 0)
                {
                    dozens -= 10;
                    if (dozens < 10)
                    {
                        ones = dozens;
                        secondDigit = i;
                        i = 10;
                    }
                }
                else
                {
                    i = 10;
                    ones = hundreds;
                }
            }

            for (int i = 1; i < 10; i++)
            {
                if (ones == 0)
                {
                    thirdDigit = 0;
                    i = 10;
                }
                else
                {
                    ones -= 1;
                    if (ones == 0)
                    {
                        thirdDigit = i;
                        i = 10;
                    }
                }
            }

            if (secondDigit == 0 && thirdDigit == 0)
            {
                result = ("00" + Convert.ToString(firstDigit));
            }

            if (secondDigit != 0 && thirdDigit != 0)
            {
                result = Convert.ToString(thirdDigit * 100 + secondDigit * 10 + firstDigit);
            }

            if (secondDigit == 0 & thirdDigit != 0)
            {
                result = Convert.ToString(thirdDigit * 100 + firstDigit);
            }

            if (secondDigit != 0 && thirdDigit == 0)
            {
                result = ("0" + Convert.ToString(secondDigit * 10 + firstDigit));
            }

            Console.WriteLine(result);
        }
    }
}