const_reverse_iterator rend() const;
const_reverse_iterator crend() const;
Returns a reverse iterator to the character following the last character of the reversed string. It corresponds to the character preceding the first character of the non-reversed string. This character acts as a placeholder, attempting to access it results in undefined behavior.
 Return value
reverse iterator to the character following the last character
 See also
| returns a reverse iterator to the beginning |
(public member function)