Has anyone actually even tried the K&R book in the past couple of decades and not run into issues like the assumption of unbuffered shell output? You get like one or two chapters in and things are already behaving outside of how they did when that book was written in the 1980s. It's a classic, yes, but I don't recommend it to anyone outside of people writing code in C89 for vintage systems... Yet the amount of suggestions I see from people who haven't actually learned C from scratch since the 1990s to read that particular title is high enough that I can't do anything but scratch my head over it. Tons has changed over thirty plus years.

If you're looking for something up to date I'd recommend this:

https://gustedt.gitlabpages.inria.fr/modern-c/