ModifyBitAtGivenPosition

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

namespace ModifyBitsAtPosition
{
    class Program
    {
        static void Main()
        {
            Console.WriteLine("n=");
            int n = int.Parse(Console.ReadLine());
            Console.WriteLine("p=");
            int p = int.Parse(Console.ReadLine());
            Console.WriteLine("v=");
            int v = int.Parse(Console.ReadLine());


            int nRightP = n >> p;
            int bit = nRightP & 1;

            int mask;
            int result;

            if (bit == 0 & v == 0)
            {
                Console.WriteLine(n);
            }
            else if (bit == 0 && v == 1)
            {
                mask = 1 << p;
                result = n | mask;
                Console.WriteLine(result);
            }
            else if (bit == 1 && v == 0)
            {
                mask = ~(1 << p);
                result = n & mask;
                Console.WriteLine(result);

            }
            else if (bit == 1 && v == 1)
            {
                Console.WriteLine(n);
            }

        }
    }
}