// Sibel Salimova <sibelsalimova@abv.bg>

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

namespace DecimalToBinary
{
    class Program
    {
        static void Main(string[] args)
        {
            int dec;
            Console.WriteLine("Enter a decimal number!");
            dec=int.Parse(Console.ReadLine());
            int a;
            string b = "";
            while (dec >= 1) {
                a = dec / 2;
                b += (dec % 2).ToString();
                dec = a;
            }
            string bin = "";
            for (int i = b.Length - 1; i >= 0; i--) {
                bin = bin + b[i];
            }
            Console.WriteLine("Binary: {0}", bin);
            Console.Read();
        }
    }
}