I still have Craftsman tools I bought in the '80s, and some I inherited from my Dad. My only complaint is whatever they made some of the old screwdriver handles out of has degraded ever-so-slightly and off-gassed something that makes my toolbox smell like somebody puked in it. No idea what’s up with that…
I remember coding actionscript in Flash and using modulo (%) to determine if a number was even or odd. It returns the remainder of the number divided by 2 and if it equals anything other than 0 then the number is odd.