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Right.
I spent 10+ years as an assembler programmer. Did a lot of ANDing and ORing and shifting.

That was the first one that came to mind as an easily understood concept to easily demonstrate.

1 & 7 = 1 NOT 0
Not 0 means the number is odd

What are you expecting?

Do you have an example definition of "bitmasking" that you don't understand that you could post here?
I've used the term to define a variable with some selected bits set on to be used to test the...