//		MPI code in C++.
//		See [Gropp/Lusk/Skjellum, "Using MPI", p.33/41 etc.]
//		and  /opt/mpich/include/mpi2c++/comm.h  for details

#include "greetings.h"
#include <iostream>                               // MPI
#include <mpi.h>
using namespace std;

int main(int argc, char *argv[])
{
    MPI_Comm icomm = MPI_COMM_WORLD;
    MPI_Init(&argc, &argv);	// E2
    
    int myrank, numprocs;
    MPI_Comm_rank(icomm, &myrank);       // my MPI-rank, process-ID
    MPI_Comm_size(icomm, &numprocs);	// number of all processes

	// cout << "\n Process nr. " << myrank << " says, there are " << numprocs << " processes running.\n \n"; //

	// E3
    if (0==myrank) {
        cout << "\n Process nr. " << myrank << " says, there are " << numprocs << " processes running.\n \n";
    }

    //greetings(icomm);
    greetings_cpp(icomm);  // E4


    MPI_Finalize();	// E2

    return 0;
}