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

  Reads bytes from a file and places them in a buffer.

  Syntax:

       #include <unistd.h>

       ssize_t read(int file_descriptor, void *buffer, size_t
       nbytes); (POSIX-1)

       int read(int file_descriptor, void *buffer, int nbytes);
       (Compatibility)