using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

​

namespace _2_s_compliment

{

    internal class Program

    {

        static void Main(string[] args)

        {

​

            Console.Write("Enter a positive integer: ");

            if (sbyte.TryParse(Console.ReadLine(), out sbyte num))

            {

                Console.WriteLine("Binary representation: " + Convert.ToString(num, 2).PadLeft(8, '0'));

                sbyte complement = (sbyte)(~num+1);

                Console.WriteLine("Binary representation: " + Convert.ToString((byte)complement, 2).PadLeft(8, '0'));

                Console.WriteLine("Decimal representation of negative: " + complement);

            }

        }

    }

}

​