inters</h3>
<p>You can also mark a pointer object as an optional pointer, meaning that, this object contains either a null value, or, a pointer that points to a value. When you mark a pointer as optional, the data type of this pointer object becomes <code>?*const T</code> or <code>?*T</code>, depending if the value pointed by the pointer is a constant value or not. The <code>?</code> identifies the object as optional, while the <code>*</code> identifies it as a pointer object.</p>
<p>In the example below, w