This is a C++ LinkedList program about Insert. I'm trying to do that not allow duplicates and will turn false.

But in this code below still can insert a duplicate value.

Please show me how to do that.

template bool LinkedList::Insert (ItemType *obj) Node newNode new Node (); ItemType *pitenData new ItemType; pItemData *obj; newNode->datapItemData; if (obj newNode->data) return false; newNode->next head; head - newNode