// dummy class A

class TClassA

{ 
 
public:
  
    TClassA(){}; 
 
    void Display(const char* text) { cout << text << endl; };  

/* more of TClassA */

};  

// dummy class B

class TClassB

{  

public:
  
TClassB()
{};
  
void Display(const char* text) { cout << text << endl; }; 
 
/* more of TClassB */

};  

// main program

int main(int /*argc*/, char* /*argv[]*/)  
{  
// 1. instantiate objects of TClassA and TClassB

TClassA objA; 
       
TClassB objB;
  
// 2. instantiate TSpecificFunctor objects ...

//    a ) functor which encapsulates pointer to object and to member of TClassA

TSpecificFunctor<TClassA> specFuncA(&objA, &TClassA::Display);
  
//    b) functor which encapsulates pointer to object and to member of TClassB

TSpecificFunctor<TClassB> specFuncB(&objB, &TClassB::Display);  

// 3. make array with pointers to TFunctor, the base class, and initialize it

TFunctor* vTable[] = { &specFuncA, &specFuncB };  

// 4. use array to call member functions without the need of an object

vTable[0]->Call("TClassA::Display called!");        // via function "Call"

(*vTable[1])   ("TClassB::Display called!");        // via operator "()"

// hit enter to terminate

 cout << endl << "Hit Enter to terminate!" << endl;  


cin.get(); 
 
return 0; 
 
}