SumOfTwoDigitsElemByElem

using System;

class Program
{
    static void Main()
    {
        string firstNumber = "3 4 2 5 2 3 6 4 6 2";

        string secondNumber = "2 4 3 5 3 6 4 7 5 4";

        string[] fNumChars = firstNumber.Split(' ');
        string[] sNumChars = secondNumber.Split(' ');

        int length = (fNumChars.Length > sNumChars.Length) ? fNumChars.Length : sNumChars.Length;
        int[] result = new int[length];

        for(int i = 0; i < length; i++)
        {
            Console.Write(fNumChars[length - i - 1] + " - " + sNumChars[length - i - 1]);
            Console.WriteLine();
        }

        Console.WriteLine("\n");

        int num = 0;
        int x = 0;
        int sum = 0;
        for(int j = 0; j < length; j++)
        {
            sum = (int.Parse(fNumChars[length - j - 1]) + int.Parse(sNumChars[length - j - 1])) + x;
            Console.Write(sum + " ");
            if(sum > 9)
            {
                result[length - j - 1] = sum % 10;
                x = 1;
            }
            else
            {
                result[length - j - 1] = sum;
                x = 0;
            }
        }

        Console.WriteLine("\n");
        for(int s = 0; s < result.Length; s++)
        {
            Console.Write(result[s] + " ");
        }

    }
}