; IntList(const IntList& src): Copy constructor. Should copy the list of nodes managed by '''src'''. This means that an entirely new list of nodes must be created, one node for each node managed by '''src''', and the value held by each of those nodes must '''equal''' the value held by the corresponding node managed by '''src'''. When this constructor is finished, the size of the current list should be the same as the size of src.<br/><br/>'''TIP:''' After initializing the current object to a '''safe and empty state''', don't forget that you can may call '''any member function''' that the current list has!