bit swapping

int number = 1 << 24 | 1 << 25 | 1 << 26; // int.Parse(Console.ReadLine());
// for testing, use 1 << 24 | 1 << 25 | 1 << 26 ;

Console.WriteLine(Convert.ToString(number,2).PadLeft(32,'0'));

for(int ii = 0; ii < 3; ++ii)
{
    int pos1 = ii + 3;
    int pos2 = ii + 24;
    bool bit1Set = (number & (1 << pos1)) != 0;
    bool bit2Set = (number & (1 << pos2)) != 0;

    if(bit2Set)
    {
        number = number | (1 << pos1);
    }
    else
    {
        number = number & ~(1 << pos1);
    }

    if(bit1Set)
    {
        number = number | (1 << pos2);
    }
    else
    {
        number = number & ~(1 << pos2);
    }

    Console.WriteLine(Convert.ToString(number,2).PadLeft(32,'0'));
}