Methods - 08

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Numerics;

namespace _08.AddTwoIntegersVersion2
{
    class Program
    {
        static void CreatingArray(int[] arrayNum)
        {
            Random numbers = new Random();
            for (int i = 0; i<arrayNum.Length; i++)
            {
                arrayNum[i] = numbers.Next(0,9);
            }
        }
        static void PrintArray(int[] array)
        {
            for (int i = array.Length -1; i >=0 ; i--)
            {
                Console.Write(array[i]);
            }
        }
        static BigInteger ConvertingArrayTo(int[] arrayNum)
        {
            BigInteger powerOf10 = 1;
            BigInteger resultNum = 0;
            for (int i = 0; i < arrayNum.Length; i++)
            {
                resultNum += arrayNum[i] * powerOf10;
                powerOf10 *= 10;
            }
            return resultNum;
        }

        static BigInteger CalcSum(BigInteger firstNum, BigInteger secondSum)
        {
            return firstNum + secondSum;
        }
        static void Main(string[] args)
        {
            Console.Write("How many digits will be the first number? ");
            int digitsFirstNum = int.Parse(Console.ReadLine());
            Console.Write("How many digits will be the second number? ");
            int digitsSecondNum = int.Parse(Console.ReadLine());

            int[] firstArray = new int[digitsFirstNum];
            int[] secondArray = new int[digitsSecondNum];

            CreatingArray(firstArray);
            CreatingArray(secondArray);

            Console.WriteLine("FistArray:");
            PrintArray(firstArray);
            Console.WriteLine();

            Console.WriteLine("SecondArray:");
            PrintArray(secondArray);
            Console.WriteLine();

            Console.WriteLine("FirstNumber:");
            Console.WriteLine(ConvertingArrayTo(firstArray));
            Console.WriteLine("SecondNumber:");
            Console.WriteLine(ConvertingArrayTo(secondArray));
            Console.WriteLine("Their sum:");
            Console.WriteLine(CalcSum(ConvertingArrayTo(firstArray), ConvertingArrayTo(secondArray)));
        }
    }
}