Bitwise operator: ^ : binary bit « Data Types « C++ Tutorial

1. C++ Tutorial
2. Data Types
3. binary bit

#include <iostream>
#include <iomanip>
using std::cout;
using std::endl;
using std::setfill;
using std::setw;

int main() {
  unsigned long red = 0XFF0000UL;      // Color red
  unsigned long white = 0XFFFFFFUL;    // Color white - RGB all maximum

  cout << std::hex;                    // Set hexadecimal output format
  cout << setfill('0');                // Set fill character for output

  unsigned long mask = red ^ white;

  cout << "\n        mask = red  white = " << setw(8) << mask;
  cout << "\n                mask  red = " << setw(8) << (mask ^ red);
  cout << "\n              mask  white = " << setw(8) << (mask ^ white);

  return 0;
}

mask = red ^ white = 0000ffff
                mask ^ red = 00ffffff
              mask ^ white = 00ff0000