VMS Help CC, Messages, IMPFNCMSSNGRET  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 Message        Non-void function "<name>" with implicit return type
                int does not contain a return statement.

 Description    This message indicates that a function with an
                implicit return type of int does not contain a return
                statement.  This message is not issued for functions
                with an explicit return type.  See message
                MISSINGRETURN.

 User Action    Consider declaring the function to be a void
                function.  If it is supposed to return a value, add a
                return statement with the value the function is to
                return.