#include <iostream>

int main(int argc, char** argv)
{
  bool hex;
  bool dec;
  bool oct;

  std::cout.setf(std::ios_base::boolalpha);

  // print state -- default is normally dec
  hex = std::cout.flags() & std::ios_base::hex;
  dec = std::cout.flags() & std::ios_base::dec;
  oct = std::cout.flags() & std::ios_base::oct;
  std::cout << "hex " << hex << "\n";
  std::cout << "dec " << dec << "\n";
  std::cout << "oct " << oct << "\n";
  std::cout << "==================================\n";

  // add hex and clear dec and oct
  std::cout << std::hex;

  hex = std::cout.flags() & std::ios_base::hex;
  dec = std::cout.flags() & std::ios_base::dec;
  oct = std::cout.flags() & std::ios_base::oct;
  std::cout << "hex " << hex << "\n";
  std::cout << "dec " << dec << "\n";
  std::cout << "oct " << oct << "\n";
  std::cout << "==================================\n";
  
  // add dec and remove oct and hex
  // if bit group is ommitted with this function results are undefined
  std::cout.setf(std::ios_base::oct, std::ios_base::basefield);
  
  hex = std::cout.flags() & std::ios_base::hex;
  dec = std::cout.flags() & std::ios_base::dec;
  oct = std::cout.flags() & std::ios_base::oct;
  std::cout << "hex " << hex << "\n";
  std::cout << "dec " << dec << "\n";
  std::cout << "oct " << oct << "\n";
  std::cout << "==================================\n";

  // OTHER GROUPINGS
  // 
  // basefield
  //    dec
  //    oct
  //    hex
  //
  // adjustfield
  //    left
  //    right
  //    internal
  //    
  // floatfield
  //    fixed
  //    scientific

  return 0;
}