#include <mpi.h>
#include <iostream>
 
int main(int argc, char** argv) {
    MPI_Init(&argc, &argv);
 
    int rank, numProcesses;
    MPI_Comm_rank(MPI_COMM_WORLD, &rank);
    MPI_Comm_size(MPI_COMM_WORLD, &numProcesses);
 
    int data = 0;
 
    if (rank == 0) {
        data = 100;
        MPI_Send(&data, 1, MPI_INT, 1, 0, MPI_COMM_WORLD); // Rank 0 sends data to rank 1
    } else if (rank == 1) {
        MPI_Recv(&data, 1, MPI_INT, 0, 0, MPI_COMM_WORLD, MPI_STATUS_IGNORE); // Rank 1 receives data from rank 0
        std::cout << "Received data: " << data << " on process " << rank << std::endl;
    }
 
    MPI_Finalize();
    return 0;
}
 
 

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