How do you write code in C?

Question

C++ / C#

Recently I saw a book by Kernighan and Ritchie, it was only + - 300 pages. Is it all C?
And the question arose, how do you write code in C? That is, they use all these usual constructions like conditions and functions?
Or perhaps because C is more of a system language, there are often built-in functions or something like that?
Please explain how they write large applications and wasps. I just can't understand)

Answer 1

hands. and brains to control the hands.
C is a fairly simple (in the sense of a poor) language, and a few hundred pages are enough to describe it.
the rest is practice.
a language textbook is just a language textbook. it introduces the language, not how to use it.