title: What will be the level of const-ness in this situation?
body: <p>when <code>ptr</code> is a <code>const</code> pointer and also a pointer to <code>const int</code>, how will it behave while copying its value into other pointers to <code>const int</code> or <code>const pointers</code>? Will be <strong>top-level</strong> or <strong>low-level</strong>?</p>