#include <iostream>
struct Shape
{
virtual Shape* duplicate()
{
std::cout << "SHAPE" << std::endl;
return new Shape;
}
virtual ~Shape() {}
};
struct Box : public Shape
{
virtual Box* duplicate()
{
std::cout << "BOX" << std::endl;
return new Box;
}
};
int main(int argc, char** argv)
{
Shape* s1 = new Box;
Shape* s2 = s1->duplicate();
delete s1;
delete s2;
return 0;
}