[EMAIL PROTECTED] writes: > Thanks for this. I'm beginning to understand a bit more. Just to > clarify (if you will), I notice that the original program that raised > this issue had an #include <iostream> at the top because the student > was using cout. If I remove that line, then the swap function becomes > unrecognized. So for some reason, iostream is prototyping swap either > directly or indirectly. Do you happen to know why iostream needs swap?
iostream probably doesn't need swap(), but it does (indirectly) need stl_algobase.h, and swap() is one of many things provided by stl_algobase.h. Here is how stl_algobase.h ends up in the compilation unit (using gcc-3.3.3 on my machine, abridged 'g++ -H' output): . /usr/include/c++/3.3.3/iostream .. /usr/include/c++/3.3.3/ostream ... /usr/include/c++/3.3.3/ios .... /usr/include/c++/3.3.3/bits/ios_base.h ..... /usr/include/c++/3.3.3/bits/locale_classes.h ...... /usr/include/c++/3.3.3/string ....... /usr/include/c++/3.3.3/memory ........ /usr/include/c++/3.3.3/bits/stl_algobase.h Cheers, -- In order to understand recursion you must first understand recursion. Remove /-nsp/ for email. _______________________________________________ Help-gplusplus mailing list Help-gplusplus@gnu.org http://lists.gnu.org/mailman/listinfo/help-gplusplus
