/sys$common/syshlp/helplib.hlb CC, Run-time functions, fclose  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  Closes a file by flushing any buffers associated with the file
  control block and freeing the file control block and buffers
  previously associated with the file pointer.

  Syntax:

       #include <stdio.h>

       int fclose(FILE *file_pointer);