#include "mpi.h"
#include <string.h>
#include <stdio.h>
int main( int argc, char **argv){
 char message[20];
 int myrank;
 MPI_Status status;
 MPI_Init( &argc, &argv );
 MPI_Comm_rank( MPI_COMM_WORLD, &myrank );
 if (myrank == 0){  /* code for process zero */
  strcpy(message,"Hello, there");
  MPI_Send(message, strlen(message)+1, MPI_CHAR, 1, 99, MPI_COMM_WORLD);
 }
 else if (myrank == 1){ /* code for process one */
  MPI_Recv(message, 20, MPI_CHAR, 0, 99, MPI_COMM_WORLD, &status);
  printf("received :%s:\n", message);
 }
 MPI_Finalize();
 return 0;
}