SYNTAX
------

C Syntax
^^^^^^^^

.. code-block:: c

    int MPI_Info_get_nthkey(MPI_Info info, int n, char* key)

Fortran Syntax
^^^^^^^^^^^^^^

.. code-block:: fortran

    USE MPI
    ! or the older form: INCLUDE 'mpif.h'
    MPI_INFO_GET_NTHKEY(INFO, N, KEY, IERROR)
    	INTEGER INFO, N, IERROR
    	CHARACTER*(*) KEY

Fortran 2008 Syntax
^^^^^^^^^^^^^^^^^^^

.. code-block:: fortran

    USE mpi_f08
    MPI_Info_get_nthkey(info, n, key, ierror)
    	TYPE(MPI_Info), INTENT(IN) :: info
    	INTEGER, INTENT(IN) :: n
    	CHARACTER(LEN=*), INTENT(OUT) :: key
    	INTEGER, OPTIONAL, INTENT(OUT) :: ierror
