> Only one sentence of this is relevant for an introductory Hello World chapter: "Basically, if we tried to use printf() without #include <stdio.h>, the compile

> Only one sentence of this is relevant for an introductory Hello World chapter: "Basically, if we tried to use printf() without #include <stdio.h>, the compiler would have complained to us about it." Quite the contrary in my opinion. As a beginner I was very frustrated with most approach that say "Just put that thing that is needed and will be explained latter. And it work good job attaboy!" And maybe 250 pages latter if the author didn't forgot in the meantime you get a one liner mention that link back to the first introduction of the syntax. At least this guide don't let the reader in the fog wondering.