If ‘Hello World’ is the first program for C students, then printf() is probably the first function. I’ve had to answer questions about printf() many times over the years, so I’ve finally set aside time for an informal writeup.

This wild goose chase is not only a great learning experience, but also an interesting test for the dedicated beginner. Will they come back with an answer? If so, how detailed is it? What IS a good answer?

source: HN