XOR

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

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            int b = 0, a = 0;
            while (b != -1)
            {
                Console.WriteLine("a: ");
                a = int.Parse(Console.ReadLine());
                Console.WriteLine("b: ");
                b = int.Parse(Console.ReadLine());
                string abinary = Convert.ToString(a, 2);
                string bbinary = Convert.ToString(b, 2);
                Console.WriteLine(string.Format("a: {0}", abinary));
                 Console.WriteLine(string.Format("b: {0}", bbinary));
                 int XOR = (a ^ b);
                Console.WriteLine("XOR: (int) {0}", XOR);
                Console.WriteLine("XOR (binary) {0}", Convert.ToString(XOR, 2));

            }
            Console.ReadLine();
        }
    }
}