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

int main(int argc, char *argv[])
{
    int myrank, nprocs, nameln;
    char name[MPI_MAX_PROCESSOR_NAME];

    MPI_Init(&argc,&argv);
    MPI_Comm_size(MPI_COMM_WORLD,&nprocs);
    MPI_Comm_rank(MPI_COMM_WORLD,&myrank);

    MPI_Get_processor_name(name, &nameln);
    printf("Hello! My rank is %d. My hostname is \"%s\"\n", myrank, name);

    MPI_Finalize();
}