mytype* p1 = &(*vect.end()); ->error: ->"vector iterator not dereferencable"

This says that this element is not valid and does not point to a valid object, the end iterator points behind the last valid element. As written before use front and back, but take care that also this objects are only valid when size()!=0

Hi,

iterator at object.end() is not referencable, it is additional node in vector that marks the end. So it doesn't sore any data. It you write for eg: for(vector<T>::iterator i = collection.begin(); i != collection.end(); i++) {... } then the loop will go through all the elem-s in the vector. If you want to acces the last element through the iterator you should use rbeging(), which is reverse iterator. If not, you can always write sth like this: do_something(a.begin, --a.end()); if do_something has of course conditional that it ends on that iterator, however it isn't common. If you aren't very primar in C++ then I suggest you can use some of functions like: for_each(interator...); it is in <functional> (or algorythm:P).

Read this links about checked iterators

http://msdn2.microsoft.com/en-us/library/y9ww7c1a.aspx

and debug iterator support:

http://msdn2.microsoft.com/en-us/library/h23zsaxy.aspx