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.