What is unsafe with fopen that's more safe with fopen_s?
How can fopen be used in a safe way (if possible)?
(I don't want to know how to suppress the warning - there are enough stackoverflow articles that answer that question)
Edit: Question was closed as "opinion based" (even though there is only one answer and I don't see much opinion in that). I'll try to rephrase a bit: It would be nice if someone could show how/where to find the documentation by Microsoft (who deprecated the function) that explains why it was deprecated.