People who use Class will never understand all the crap they are doing.
Using int made sense in the 50s. Not any more
It turns out that style matters in programming for the same reason that it matters in writing. It makes for better reading.
The good thing about reinventing the wheel is that you can get a round one.
Obsolete comments are worse than no comments.
Generally, the craft of programming is the factoring of a set of requirements into a a set of functions and data structures.