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I think "return -1;" would have been appropriate =(

But seriously, this page actually brought a tear to my eye. It's like all the C code in the world right now feels a little less cheerful...

EDIT: But yes, there is something oddly inspiring about the world just moving on.

Personally, I would rather an ENOENT error. Seems ... fitting, somehow.

Well, either that or the Windows error STATUS_OBJECT_NAME_NOT_FOUND.

True enough. It's not an error; it's expected behavior.

Not quite: it's expected behavior, but still an error. In the logic of a testsuite, it's an XFAIL.

I interpreted it as returning "success". In a more global context than just the program at hand.

Having read K & R long time ago, and enjoyed the concise book, it is a sad day. All C programs in the world must be returning success today.

It may be concise, but it is incredibly dense. I'm not sure there's a unnecessary word, let alone paragraph.

It definitely rewards persistent study, I've been programming for years, and I still learn something every single time I dip into it.