#include <iostream>
#include <unistd.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <fstream>
#include <string>


using namespace std;

int main () {

   int flags = O_WRONLY | O_TRUNC | O_CREAT;
   mode_t mode = S_IRUSR | S_IWUSR;

   int fd{open("outputFile", flags, mode)};

   if (-1 == fd) {
       perror("Error open: ");
       return 1;
   }

   // make stdout point to the file.
   if ( -1 == dup2(fd, STDOUT_FILENO )) {
       perror("Error dup2: ");
   }
   close(fd);

   for(int i =0; i < 10; ++i) {
      cout << "i = " << i << endl;
   }


   return 0;
}