VMS Help CC, Run-time functions, fopen  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  Opens a file by returning the address of a FILE structure.

  Syntax:

       #include <stdio.h>

       FILE *fopen(const char *file_spec, const char *a_mode); (ANSI
       C)

       FILE *fopen(const char *file_spec, const char *a_mode ,...);
       (Compaq C Extension)

  where the ...  represents optional file attribute arguments.  The
  file attribute arguments are the same as those used in the creat
  function.