.. highlightlang:: us

.. _nc_varinq_natts:

nc_varinq_natts
===============

.. index:: nc_varinq_natts

.. us.tag  nc_varinq_natts ENGLISH NC_Var

The :ref:`nc_varinq_natts` function returns the number of attributes for a variable,
given its ID.

.. function::  natts = nc_varinq_natts(ncid, varid)

.. us.return

**Return Value**

*natts* is the number of attributes for the variable with the ID *varid*. If
an error occurs *natts* is -1.

.. us.params

**Parameters**

.. uparam:: ncid

   Identifies the netCDF file.

.. uparam:: varid

   *varid* is the ID of a variable.

.. seealso::
   :ref:`overview-netcdf-files`,
   :ref:`nc_create`,
   :ref:`nc_inquire_ngatts`

:sub:`id-1291545`