C++ Iterators, interfaces and pointers

I'm trying to use c++ iterators with interfaces, but does not manage to make it working. I'm a bit lost with what type to choose for the vector contents. Is this need to be a pointer ? do I have to make a "new Implementation()"? In brief, it is unclear to me, and I can't manage to find useful examples about that. Here are the interfaces and implementations (the .h file). ``` class Interface{ public: virtual int method() = 0; }; class Implementation1 : public Interface{ public: int method(); }; class Implementation2 : public Interface{ public: int method(); }; ``` The .cpp file: ``` #include "content.h" int Implementation1::method(){ return 1; } int Implementation2::method(){ return 2; } ``` And my main function: ``` #include "content.h" #include <vector> #include <iostream> using namespace std; int main(void) { // create the vector and put elements in it vector<Interface*> elements; elements.push_back(new Implementation1()); elements.push_back(new Implementation1()); elements.push_back(new Implementation2()); // now iterate on them vector<Interface*>::iterator iterator; for(iterator = elements.begin(); iterator != elements.end(); ++iterator ){ *iterator->method(); } return 1; } ``` the compilator is outputting: main.cpp: In function ‘int main()’: main.cpp:19: error: request for member ‘method’ in ‘* iterator.__gnu_cxx::__normal_iterator<_Iterator, _Container>::operator-> with _Iterator = Interface**, _Container = std::vector >’, which is of non-class type ‘Interface*’ Any idea about what I'm doing wrong here ?