SYNTAX

C Syntax

int MPI_Comm_rank(MPI_Comm comm, int* rank)

Fortran Syntax

USE MPI
! or the older form: INCLUDE 'mpif.h'
MPI_COMM_RANK(COMM, RANK, IERROR)
    INTEGER COMM, RANK, IERROR

Fortran 2008 Syntax

USE mpi_f08
MPI_Comm_rank(comm, rank, ierror)
    TYPE(MPI_Comm), INTENT(IN) :: comm
    INTEGER, INTENT(OUT) :: rank
    INTEGER, OPTIONAL, INTENT(OUT) :: ierror