#include <iostream>

class A
{
public:
  A() : w(1), v(2) { q = 80; ch1 = 'U'; ch2 = 'V'; ch3 = 'a';}
  ~A() {}
  
  void foo() {
    std::cout << "A::foo " << this << " " << w << std::endl;
  }
  
  void quux() {};
  
  void quuux(int a) {
    std::cout << "A::quuux " << this << " " << w << " " << a << std::endl;
  }
  
private:
  int w, v;
  char ch1, ch2, ch3;
  double q;
};


int main(int argc, char **argv)
{
  A *a = new A();

  // private members are inaccessible outside the class...
  // std::cout << a->w << " " << a->v << std::endl;

  // ...but they're still there if you know where to look
  // beginning of an instance of A looks the same an array of two ints
  std::cout << ((int *)a)[0] << " " << ((int *)a)[1] << std::endl;
  // for other fields we do the pointer arithmetic in bytes an coerce the
  // compiler into reading the right type from the resulting address
  std::cout << *((double *)((char *)a + 16)) << std::endl;
  
  delete a;
}

/*
(gdb) x/6x a
0x613e70:       0x00000001      0x00000002      0x00615655      0x00000000
0x613e80:       0x00000000      0x40540000
 */