DecToBin

using System;
using System.Collections.Generic;

public class Program
{
	public static void Dec2Bin(int num)
	{
		Stack<int> binary = new Stack<int>();
		while (num != 0)
		{
			binary.Push(num % 2);
			num /= 2;
		}

		while (binary.Count != 0)
		{
			Console.Write(binary.Pop());
		}
	}
	public static void Main()
	{
		Console.Write("Enter number: ");
		int num = int.Parse(Console.ReadLine());
		Stack<int> binary = new Stack<int>();
		while (num != 0)
		{
			binary.Push(num % 2);
			num /= 2;
		}

		while (binary.Count != 0)
		{
			Console.Write(binary.Pop());
		}
	}
}