VMS Help CC, Language topics, Predefined Macros  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  In addition to the ANSI-compliant, implementation-independent
  macros described in the Compaq C Language Reference Manual, Compaq
  C for OpenVMS systems provides the following predefined macros:

  Additional Information (explode) :

• System Identification Macros
• Compiler Mode Macros
• Floating Point Macros
• RTL Standards Macros
• HIDE FORBIDDEN NAMES
• CC$gfloat
• DATE
• FILE
• LINE
• TIME