...

yeah, that should work as desired, though i forget if "0L" is an ansi-C-ism, and don't have a book around to check...

Yep, it's in there. Section 3.1.3.2 of the spec I have dated 1990. I think this has been around for a while, probably in K&R too.

Just checked & it's definitely in K&R too. Appendix A section 2.4.2. - Tom