// File: ahack2.cpp
//
// Another example of a hack.
//  

#include <iostream>
#include <sstream>
using namespace std ;

class ABC {
public:
   ABC() { It = 17 ; }
 
   // A const member function cannot change
   // the value of a data member, right?
   //
   void ChangeIt() const ;

   void PrintIt() const { cout << It << endl ; }

private:
   int It ;

} ;

int main() {
   ABC X ;

   cout << "Before calling ChangeIt(): " ;
   X.PrintIt() ;

   X.ChangeIt() ;

   cout << "After calling ChangeIt(): " ;
   X.PrintIt() ;
}


void ABC::ChangeIt () const {
   void *ptr ;
   stringstream s ;

   s << &It ;
   s >> ptr ;
   * ((int *) ptr) = 42 ;
}