Earlier quoted context omitted.
Stack overflow (and internet in general) changed the programming as we (at least some of us) knew it. When I was learning programming I had no internet, no books outside of library, nobody to ask for days. I remember vividly having spent days trying to figure out how to use the stdlib qsort, and not being able to.
I'm not from that generation so that's a bit hard for me to understand. Even if you used a closed-source C compiler, wouldn't you still have been able to look at the header file, which would have been pretty self-explanatory? E.g. void qsort(void* base, size_t nmemb, size_t size, int ( compar)(const void , const void* )); And surely if you bought a C compiler, you would have gotten a manual or two with it? Documentat…
Also I don't know if it came with manual but my English wasn't good enough to read them anyways.