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

int  main (int argc, char **argv)
{
   int rank, n, i, message;
   char buff[1000];
   MPI_Status status;

   MPI_Init (&argc, &argv);

   MPI_Comm_size (MPI_COMM_WORLD, &n);

   MPI_Comm_rank (MPI_COMM_WORLD, &rank);

   if (rank==0) {  /* Process 0 will output data */
      cout << "\n Enter anything to get started" << endl;
      cin >> buff; 
      cout << "\n You entered:" <<  buff << endl;
      cout << "\n Hello from process " << rank << endl;
      for (i=1;i<n;i++) {
         MPI_Recv (&message, 1, MPI_INT, MPI_ANY_SOURCE, MPI_ANY_TAG,
                   MPI_COMM_WORLD, &status);
         cout <<"\n Hello from process " << message << endl;
      }
   }
   else MPI_Send (&rank, 1, MPI_INT, 0, 111, MPI_COMM_WORLD);

   MPI_Finalize ();
   return 0;
}