/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */

/*

 *  (C) 2001 by Argonne National Laboratory.

 *      See COPYRIGHT in top-level directory.

 */

#include <stdio.h>

#include "mpi.h"

int main(int argc, char *argv[])

{

    MPI_Comm intercomm;

    char str[10];

    int err, rank;

    MPI_Init(&argc, &argv);

    MPI_Comm_rank(MPI_COMM_WORLD, &rank;;

    MPI_Comm_get_parent(&intercomm);

    if (rank == 3) {

        err = MPI_Send("hi", 3, MPI_CHAR, 3, 0, intercomm);

        err = MPI_Recv(str, 4, MPI_CHAR, 3, 0, intercomm, MPI_STATUS_IGNORE);

        printf("Child received from parent: %s\n", str);

        fflush(stdout);

    }

    MPI_Finalize();

    return 0;

}