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

  Writes a specified number of bytes from a buffer to a file.

  Syntax:

       #include <unistd.h>

       int write(int file_descriptor, void *buffer,int nbytes);
       (POSIX-1)

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