ModifyABitAtGivenPosition

using System;

class ModifyABitAtGivenPosition
{
    static void Main()
    {
        Console.WriteLine("Enter integer number: ");
        int num = int.Parse(Console.ReadLine());
        Console.WriteLine("Enter bit value: ");
        int value = new int();
        for (int cnt = 0; cnt < 1; cnt++)
        {
            value = int.Parse(Console.ReadLine());
            if (value < 0 && value > 1)
            {
                Console.WriteLine("Invalid Input (only 1 and 0 are allowed). Try Again.");
                cnt--;
            }
        }
        Console.WriteLine("Enter bit position [0-n]: ");
        int position = int.Parse(Console.ReadLine());
        //-------------------------
        bool checkBitValue = ((num >> position) & 1) == 1;
        if (checkBitValue && value == 0)
        {
                num -= (1 << position);
        }
        else
        {
            if (value == 1)
            {
                num += (1 << position);
            }
        }
        Console.WriteLine(num);
    }
}