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

int main(int argc, char **argv)
{
    int size;
    int rank;
    int value;
    int root=0;
    int i;
    int anytag =0;
    MPI_Status status;
    
    MPI_Init(&argc, &argv);
    MPI_Comm_size(MPI_COMM_WORLD, &size);
    MPI_Comm_rank(MPI_COMM_WORLD, &rank);
    if (rank == 0)
    {
       printf("Enter your number to send: ");
       scanf("%d", &value);
       printf("Sending out %d, address %u, from process %d\n",
                value, &value, rank);
       for (i=1; i < size; i++)
       {
          MPI_Send(&value, 1, MPI_INT, i, anytag, MPI_COMM_WORLD);
       }
    }
    else {
       MPI_Recv(&value, 1, MPI_INT, 0, anytag, MPI_COMM_WORLD, &status);
       printf("Hello from process %d out of %d, Received: %d, Address:%u\n", 
               rank, size, value, &value);
     }

    MPI_Finalize();
    return 0;
}

/*
mpirun N sendInt1
Enter your number to send: 1234

Sending out 1234, address 3221223644, from process 0
Hello from process 3 out of 6, Received: 1234, Address:3221223900
Hello from process 1 out of 6, Received: 1234, Address:3221223900
Hello from process 2 out of 6, Received: 1234, Address:3221223900
Hello from process 5 out of 6, Received: 1234, Address:3221223900
Hello from process 4 out of 6, Received: 1234, Address:3221223900

*/