#include <iostream>
#include <list>
#include <typeinfo>
using namespace std;

typedef list<int> List;

template <class>
void show_iter_type(Iter)
{
  cout << typeid(typename Iter::iterator_category).name() << endl;
}

int main()
{
  List l;
  List::const_iterator i = l.end();

  show_iter_type(i);

  return 0;
}

seb@seb:~/progs/test/cpp/list-iterators$ ./test
St26bidirectional_iterator_tag

class E {
    int x;
    class B { };

    class I {
        B b;                    //error: E::B is private
        int y;
        void f(E* p, int i)
        {
            p->x = i;           //error: E::x is private
        }
    };

    int g(I* p)
    {
        return p->y;            //error: I::y is private
    }
};

test.cpp:6: warning: all member functions in class `E::I' are private