Description

   The pclose function closes a pipe between the calling program and
   a shell command to be executed. Use pclose to close any stream
   you have opened with popen. The pclose function waits for the
   associated process to end, and then returns the exit status of
   the command. See the description of waitpid for information on
   interpreting the exit status.

   Beginning with OpenVMS Version 7.3-1, when compiled with the
   _VMS_WAIT macro defined, the pclose function returns the OpenVMS
   completion code of the child process.

   See also popen.