Loops_14_DecimalToBinary

static void Main()
        {
            long decNumber = long.Parse(Console.ReadLine());
            string binNumber = "";
            while (decNumber != 0)
            {
                int remain = (int) decNumber % 2;
                decNumber /= 2;
                binNumber = remain + binNumber;
            }
            Console.WriteLine(binNumber);
        }