> If the sample code makes use of single language extension not part of ISO C

What are you even arguing right now? (Btw -ansi compiler flag)

> Smart-arse is comparing C versus JavaScript

I chose JavaScript to make the idea of a spectrum clearer using extremes. I can do C++ if you like. The machine doesn’t care about destructors, move, concepts, initializer lists, virtual methods, launder, or inheritance. You are programming against an abstract model further divorced from how x86 CPUs work.