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

void main(int argc, char **argv)
{
   float a, b;
   int n, np, id;
   void GetData(float*, float*, int*, int);
   
   MPI_Init(&argc, &argv);
   MPI_Comm_size(MPI_COMM_WORLD, &np);
   MPI_Comm_rank(MPI_COMM_WORLD, &id);

   GetData(&a, &b, &n, id);

   printf(" id = %d, a = %f, b = %f, n = %d\n",id,a,b,n);

   MPI_Barrier(MPI_COMM_WORLD);
   MPI_Finalize();
   return; 

}

void GetData(float *a, float *b, int *n, int my_rank)
{

   int ierr;

   if ( my_rank == 0 ) {
      printf("Enter a, b, n:\n");
      scanf("%f %f %d", a, b, n);
   }

   ierr = MPI_Bcast(a,1,MPI_FLOAT,0,MPI_COMM_WORLD);
   ierr = MPI_Bcast(b,1,MPI_FLOAT,0,MPI_COMM_WORLD);
   ierr = MPI_Bcast(n,1,MPI_INT,0,MPI_COMM_WORLD);

   return;

}