Peter J Halls wrote: > Mateusz, > > the extract from the standard does not say there is no difference: it > says that this is implementation dependent - that implementors are > free to differentiate if they wish and, indeed, that the #include " " > form is optional.
Peter, There is no difference in the effect and the "implementation defined part" means: - quoted version to first look for a header in current directory of source file that contains the #include "" directive and if fails, in most cases, tries to search in compiler known paths. - <> version triggers searching to start in so called standard paths known by compiler, paths specified with -I option or INCLUDE environment variable and eventually try current directory of a source file containing #include directive. Meaning, the actual difference is only in order in which locations are tried. The standard gives some room of customisation to allow C++ implementations to provide headers in special way - they may not even exist as regular files in file system, then <> notation has special meaning. Best regards, -- Mateusz Loskot, http://mateusz.loskot.net Charter Member of OSGeo, http://osgeo.org _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
