MAINNOTINT

Message        Strict standard C extension:  The declaration of the
               "main" function has a return type other than int.

Description    Standard C requires that the "main" function be
               defined with a return type of int.  HP C will accept
               other return types, but the program does not conform
               to the C standard.  The status value returned to the
               environment may not be what you expect, and other C
               compilers may not accept the definition as written.

User Action    Define the "main" function with a return type of int
               for maximal portability.