Beej’s Guide to C Programming [pdf]
It doesn't do the brisk business of the networking one, but there have been at least a couple past threads:Beej's Guide to C Programming - https://news.ycombinator.com/item?id=26100391 - Feb 2021 (1 comment)Beej's Guide to C Programming (2007) - https://news.ycombinator.com/item?id=15198093 - Sept 2017 (79 comments)As long as we're talking C programming, I'd single out this large thread with C Standards committee members from last year:Tell HN: C Experts Panel – Ask us anything about C - https://news.ycombinator.com/item?id=22865357 - April 2020 (962 comments)