"Bill Cunningham" <nospam@nspam.com> writes:
[...]
> My question was about preprocessor directives. Yes it was a typo. The
> headers I posted if they were relevant to the question I understand would be
> off topic. They were just an example of using the preprocessor to block out
> headers not needed. The question concern #if and #ifdef which seems to be it
> looks like now to mean the same thing. #endif also was inquired to.

No, #if and #ifdef are similar, but they don't mean the same thing.
Consult your text book to learn the difference.

--
Keith Thompson (The_Other_Keith) kst-u@mib.org <http://www.ghoti.net/~kst>
Nokia
"We must do something. This is something. Therefore, we must do this."
-- Antony Jay and Jonathan Lynn, "Yes Minister"