#include <iostream>
#include <mpi.h>
#ifdef _WIN32
#include <winsock2.h>
#else
#include <netdb.h>
#include <arpa/inet.h>
#endif


int main(int argc, char** argv) {
  MPI_Init(&argc, &argv);
  char hostname[MPI_MAX_PROCESSOR_NAME];
  int len;
  MPI_Get_processor_name(hostname,&len);
  struct hostent * host = gethostbyname(hostname);
  int myaddr1 = (int) inet_addr(inet_ntoa(*(struct in_addr *)host->h_addr));
  int myaddr2 = (int) htonl(inet_network(inet_ntoa(*(struct in_addr *)host->h_addr)));
  std::cout << "myaddr1 = " << myaddr1 << std::endl;
  std::cout << "myaddr2 = " << myaddr2 << std::endl;
  MPI_Finalize();
}