When I started a programming job, I read this book, Clean Code, and Code Complete. Code Complete is kinda old but still great, Clean Code is not bad but it's Java centric and has a lot of questionable tips. But The Pragmatic Programmer never gets old.
I was given code complete by my first programming manager in around 99 -- maybe he thought I needed to read it heh
This is my favourite : A philosophy of software design by John Ousterhout. I haven't found a better book.
I got on very well with Van der Linden's Deep C Secrets. It's from 1994, so misses out on the newer versions, but aside from that it's aged well, IMHO.
And good news: it's been open sourced: https://freecomputerbooks.com/Expert-C-Programming-Deep-C-Se... and its well regarded on Hacker News https://hackernewsbooks.com/book/expert-c-programming-deep-c... .