Tri-Bit Switch

using System;
using System.Linq;

namespace Tri_Bit_Switch
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Enter your number here: ");
            int number = int.Parse(Console.ReadLine());
            Console.WriteLine("Enter the position of the first out of 3 bits you want to invert: ");
            int firstPos = int.Parse(Console.ReadLine());
            int helpNum = 7 << firstPos;
            int invertedNumber = number^helpNum;
            Console.WriteLine(invertedNumber);
        }
    }
}