Assignment 2 Question2(b)

Language: C++
template<class Type>
void linkedListType<Type>::deleteNode(const Type& deleteItem)
{
	nodeType<Type> *current; //pointer to traverse the list
	nodeType<Type> *trailCurrent; //pointer just before current
	bool found;
 
	if(first == NULL)    //Case 1; list is empty. 
		cerr<<"Can not delete from an empty list.\n";
	else
	{
		if(first->info == deleteItem) //Case 2 
		{
			current = first;
			first = first->link;
			count--;
			if(first == NULL)    //list has only one node
				last = NULL;
			delete current;
		}
		else  //search the list for the node with the given info
		{
			found = false;
			trailCurrent = first;   //set trailCurrent to point to
                                 //the first node
			current = first->link;  //set current to point to the 
    			   //second node
 
			while(current != NULL && !found)
			{
  				if(current->info != deleteItem) 
				{
					trailCurrent = current;
					current = current->link;
				}
				else
					found = true;
			} // end while
 
			if(found) //Case 3; if found, delete the node
			{
				trailCurrent->link = current->link;
				count--;
 
				if(last == current)      //node to be deleted was 
                                     //the last node
					last = trailCurrent;  //update the value of last
 
				delete current;  //delete the node from the list
			}
			else
				cout<<"Item to be deleted is not in the list."<<endl;
		} //end else
	} //end else
} //end deleteNode

"....just add(ing) the extended functions to the existing linkedListType class"