Hi Neo, --- Foo.h --- #ifndef Foo_H_ONCE #define Foo_H_ONCE extern int MyFoo; #endif // Foo_H_ONCE<NO-NEWLINE> --- --- --- The "<NO-NEWLINE>" is a meta to indicate that there is no newline at the end of the file. --- Foo.cpp --- #include "Foo.h" #include "Bar.h" ...yada yada yada... --- --- --- Is Bar.h supposed to be included? Or is the comment-to-end-of-line at the end of Foo.h supposed to comment it out? The behavior is undefined. HTH, --Eljay
