Example 2. Adding an SDS to a New Vgroup

This example illustrates the use of Vaddtagref/vfadtr to add an HDF object, an
SDS specifically, to a vgroup.

In this example, the program first creates the HDF file
"General_Vgroups.hdf" then an SDS in the SD interface and a vgroup in
the V interface.  The SDS is named "Test SD" and is a one-dimensional array of
type int32 of 10 elements.  The vgroup is named "SD Vgroup" and is of class
"Common Vgroups".  The program then adds the SDS to the vgroup using
Vaddtagref/vfadtr.  Notice that,
when the operations are complete, the program explicitly terminates
access to the SDS, the vgroup, the SD interface, and the V interface
before closing the HDF file.  Refer to Chapter 3, titled Scientific
Data Sets (SD API), for the discussion of the SD routines used in this
example.