#include <iostream>
#include <unistd.h>
#include <stdio.h>
#include <fcntl.h>

#include <sys/types.h>
#include <sys/stat.h>

#include <string>

using namespace std;

const string REQUEST{"DieServerRequest"};
const string ANSWER{"DieServerAnswer"};

int main() {
   int request, answer;

   request = open("DieServerRequest", O_WRONLY);
   if (request < 0) {
      perror("open Request");
      cerr << " Did you start the server?" << endl;
      return 1;
   }

   answer = open("DieServerAnswer", O_RDONLY);
   if (answer < 0) {
      perror("open Answer");
      return 1;
   }

   int sides, result;

   cout << "How many sides? ";
   cout << "\tEnter a negative to exit server" << endl;
   cin >> sides;

   // I should be checking return value, but ...
   write(request, &sides, sizeof(int));
   read(answer, &result, sizeof(int));

   cout << "The value is " << result << endl;

   // I should be checking return value, but ...
   close(request);
   close(answer);

   return 0;
}