Linked List Help

This is a discussion on Linked List Help within the C++ Programming forums, part of the General Programming Boards category; My first languge was Java and now I'm trying to learn C++ because I want to program games. To practice ...

  1. #1
    Registered User
    Join Date
    Nov 2005
    Posts
    5

    Linked List Help

    My first languge was Java and now I'm trying to learn C++ because I want to program games. To practice I started implementing a simple linked list but because I'm used to a garbage collector I'm kinda unsure about deleting nodes.

    Here I'm trying to delete the first node called "head" in a linked list:
    Code:
    void LinkedList::remove(int index){
    	if(index == 1){
    		Node* temp = head;
    		head = head->getNext();
    		freeNode(temp);
    	}
    }
    
    void LinkedList::freeNode(Node* nodePtr){
    	delete nodePtr; 
    }
    Is this a good way of doing it? I tried not to put alot of code up so, let me know if you have a question.

  2. #2
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    Join Date
    Jan 2005
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    7,325
    That code looks fine. If the node is not the head, then you might need to do more work, depending on your Node class.

    BTW, except for learning exercises, you should generally be using the standard C++ list class for your linked lists needs (or some other standard container) in C++.

  3. #3
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    Join Date
    Apr 2003
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    2,662
    You only use delete when you've used new to allocate the memory for an object. Did you use new?

    As David mentioned, just like Java has its Vector, LinkedList, and HashMap utility classes, C++ has similar classes with iterators in the Standard Template Library(STL). The notation happens to be a little more tortured in C++. Check out "The C++ Standard Library"(Josuttis), especially chapter 5 for an overview, or check out some of the online tutorials.
    Last edited by 7stud; 11-15-2005 at 10:29 PM.

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