#include "mpi.h"
#include <stdio.h>
int main(argc,argv)
int argc; char *argv[];
{

int numtasks, rank,rc;
rc = MPI_Init(&argc,&argv);
if(rc!=0){printf("error in mpi initialization\n");
          MPI_Abort(MPI_COMM_WORLD,rc);
            }
MPI_Comm_size(MPI_COMM_WORLD,&numtasks);
MPI_Comm_rank(MPI_COMM_WORLD,&rank);
printf("number of tasks= %d, my rank= %d\n",numtasks,rank);
MPI_Finalize();
}