Шаблон функции и разные типы данных

#pragma hdrstop
#pragma argsused
 
#include <tchar.h>
#include <stdio.h>
 
#include <typeinfo> // For std::bad_cast
#include <iostream> // For std::cout, std::err, std::endl etc.
 
#include <conio.h>
 
 
 
 
class A {
public:
    // Since RTTI is included in the virtual method table there should be at least one virtual function.
    virtual ~A() { };
    void methodSpecificToA() { std::cout << "Method specific for A was invoked" << std::endl; };
};
 
class B : public A {
public:
    void methodSpecificToB() { std::cout << "Method specific for B was invoked" << std::endl; };
    virtual ~B() { };
};
 
class C : public A {
public:
    void methodSpecificToB() { std::cout << "Method specific for C was invoked" << std::endl; };
    virtual ~C() { };
};
 
void my_function(A& my_a)
{
    try
    {
        B& my_b = dynamic_cast<B&>(my_a); // cast will be successful only for B type objects.
        my_b.methodSpecificToB();
    }
    catch (const std::bad_cast& e)
    {
        std::cerr << "  Exception " << e.what() << " thrown." << std::endl;
        std::cerr << "  Object is not of type B" << std::endl;
    }
}
 
template< typename T >
void sort( T& cl_test )
{
 
  my_function(cl_test);
 
}
 
 
 
int main()
{
   
 
    A *arrayOfA[3];          // Array of pointers to base class (A)
    arrayOfA[0] = new B();   // Pointer to B object
    arrayOfA[1] = new C();   // Pointer to C object
    arrayOfA[2] = new A();   // Pointer to A object
 
    for (int i = 0; i < 3; i++)
    {
        sort(*arrayOfA[i]);
        delete arrayOfA[i];  // delete object to prevent memory leak
    }
 
 
  getch();
 
}