0x means the numbers that follow will be in hexadecimal format so for example 0x01 would be 1, 0x0A (letters are used because there are no more digits) is 10, 0x0F is 15, so 0x20 is 32. An upper case letter is 32 places less than its uppercase counterpart.

Is this Gaussian or what? How did you know that?

That's a good one!

Very Code Complete solution there.

Hi,

You won't need a switch for checking a simple boolean since there are only two options.

You'd usually use the switch statement for something like an enum where there are more possible cases.