On Mon, 8 Nov 2004 09:35:31 -0500, David Shaw said: > For maximum portability (and skipping a typecast), shouldn't that be > %zu if len is a size_t? I seem to recall that the 'z' flag is in > POSIX. It is in POSIX.1-2001 (ISO-1003.1-2001) but not in the original specs from from 1988 or 1990. Thus if you have portability in mind you should not use it yet. Shalom-Salam, Werner