Sum two number without arithmetic operator

Sum two number without arithmetic operator, Using C#

using System; 

namespace ConsoleApp1

{

    public class Program

    {

        static void Main()

        {

            int sum = SumWithoutArithmeticOprator(25, 7);

            Console.WriteLine($"Sum of two numbers is {sum}");

            Console.ReadLine();

        }

 

        private static int SumWithoutArithmeticOprator(int v1, int v2)

        {

            if (v2 == 0) return v1;

            if (v1 == 0) return v2;

            // Where v1 ^ v2: XOR bitwise calculation

            // v1 & v2: AND bitwise with carry

            return SumWithoutArithmeticOprator((v1 ^ v2), (v1 & v2) << 1);

        }

    }

}