using System;

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class Program{

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   static void Main(string[] args){

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      try{

 Console.WriteLine("Enter the number:"); 

    String s =Console.ReadLine();

    int   i = (int)Convert.ToInt64(s); 

         Console.WriteLine("Binary equivalent of the number is:"); 

    //write down the logic

Console.WriteLine(ToBinary(i));

      }catch(Exception e){

         Console.WriteLine("\n{0}\n",e.Message);

 }

​

   }//end Main

   static string ToBinary(int toConvert)

   {

       string result = string.Empty;

       for(int i = 0; i < 16; i++) {

            result += (toConvert & (1 << i)) > 0 ? "1" : "0";

        }

        return Reverse(result);

   }

   static string Reverse(string s)

   {

       char[] arr = s.ToCharArray();

       Array.Reverse(arr);

       return new string(arr);

   }

​

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}//end class Program 

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