i'v tryed to creat new node if fFirst is empty but got a problem to test if fFirst is empty
Code:void LinkedList::push_back (CalcCommand* data) { if (isEmpty()) { fFirst->setNext(data); } else { CalcCommand* temp =fFirst; while (temp->getNext() != 0) { temp = temp -> getNext ();//to let temp point to the last node in the list } temp -> setNext (data);//this will add data to the end of the list data -> setNext (0); //and this will set the one after the end of the list to NULL } }