.. highlightlang:: us

.. index:: nc_inquire_nvars

.. _nc_inquire_nvars:

nc_inquire_nvars
================

.. us.tag  nc_inquire_nvars ENGLISH NC

:ref:`nc_inquire_nvars` returns the number of variables in a nc file.

.. function::  nvars = nc_inquire_nvars(ncid)

.. us.return

**Return Value**

If the function succeeds, the return value is the number of variables. If the
function fails, the return value is -1.

.. us.params

**Parameters**

.. uparam:: ncid

   Identifies the nc file.

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

:sub:`id-1157634`