#include <stdio.h>
#include <mpi.h>

int main(int argc, char** argv) {
    int rank, size;

    /* initialize MPI */
    MPI_Init(&argc, &argv);

    /* get the rank (process id) and size (number of processes) */
    MPI_Comm_rank(MPI_COMM_WORLD, &rank);
    MPI_Comm_size(MPI_COMM_WORLD, &size);

    /* print a hello message */
    printf("Hello from process %d of %d!\n", rank, size);

    /* quit MPI */
    MPI_Finalize();
    return 0;
}