How is end() implemented in STL containers?

Question

So when we need to traverse a container from start to end we write something like

for (i = v->begin(); i != v->end(); i++)

assuming i

Answer 1

C++03 Section 23.1/7 says

begin() returns an iterator referring to the first element in the container.

end() returns an iterator which is the past-the-end value for the container.

If the container is empty, then begin() == end();