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

   int main(argc,argv)
   int argc;
   char *argv[]; {
   int  numtasks, rank, rc; 
   char processor_name[MPI_MAX_PROCESSOR_NAME];
   int  namelen;


   rc = MPI_Init(&argc,&argv);
   if (rc != MPI_SUCCESS) {
     printf ("Error starting MPI program. Terminating.\n");
     MPI_Abort(MPI_COMM_WORLD, rc);
     }

   MPI_Comm_size(MPI_COMM_WORLD,&numtasks);
   MPI_Comm_rank(MPI_COMM_WORLD,&rank);
   MPI_Get_processor_name(processor_name,&namelen);
   printf ("Number of tasks= %d My rank= %d My processor name=%s\n", numtasks,rank ,processor_name);

   /*******  do some work *******/

   MPI_Finalize();

   }