10. Multiply Evens by Odds

using System;

namespace MultiplyEvensByOdds
{
    class Program
    {
        static void Main(string[] args)
        {
            int number = Math.Abs(int.Parse(Console.ReadLine()));
            int odd = 0;
            int even = 0;
            int sum = 0;

            odd = GetSumOddDigits(number, odd);
            even = GetSumEvenDigits(number, even);
            sum = GetMultipleEvenAndOddDigits(odd, even, sum);
            Console.WriteLine(sum);
        }

        static int GetSumOddDigits(int number, int odd)
        {
            for (int i = 0; i < number.ToString().Length; i++)
            {
                if (number.ToString()[i] % 2 == 1)
                {
                    odd += number.ToString()[i] - 48;
                }
            }
            return odd;
        }
        static int GetSumEvenDigits(int number, int even)
        {
            for (int i = 0; i < number.ToString().Length; i++)
            {
                if (number.ToString()[i] % 2 == 0)
                {
                    even += number.ToString()[i] - 48;
                }
            }
            return even;
        }

        static int GetMultipleEvenAndOddDigits(int odd, int even, int sum)
        {
            return odd * even;
        }
    }
}