Adding Node - Double Linked List

I'm trying to write a deck to use in a blackjack game, but am having trouble with the adding cards functions. After I add all of them, I traversed the list to check what's wrong, and for each card I print out the mpPrevious, mValue, mSuit, and mpNext. The Suit, Value, and Next card pointer are all fine, but the Previous member pointer is always 0 (null), instead of being the address of the previous card. Please help me find what is wrong...

Thank you,
Sean Michael Simonsen

Code:

---

void Deck::AddCardToTop( Card* pNewCard )
{

        ++mNumberOfCards;

        if( !mpBottomCard )
        {
               
                mpBottomCard = pNewCard;

                mpTopCard = pNewCard;
       
        }

        else
        {

                Card* Temp = mpTopCard;

                mpTopCard = pNewCard;

                mpTopCard->mpNext = Temp;

                Temp->mpPrevious = mpTopCard;

        }

}

void Deck::AddCardToBottom( Card* pNewCard )
{

        ++mNumberOfCards;

        if( !mpTopCard )
        {
               
                mpBottomCard = pNewCard;
               
                mpTopCard = pNewCard;
       
        }
       
        else
        {

                Card* Temp = mpBottomCard;

                mpBottomCard = pNewCard;

                mpBottomCard->mpPrevious = Temp;

                Temp->mpNext = mpBottomCard;

        }

}

---

I recommend STL.

Kuphryn

Thank you, I fixed it. The problem was not in those functions, but elsewhere. The reason I thought the previous pointers were null is because I kept printing them with respect to the Top Card, so it doesn't have a preceding one. I'm not using STL because it only does a void return type for removing nodes (as far as I know), and since it's a deck of cards I'll want to shuffle it using a real-life algorithm, plus I need the practice in making my own double linked list.

Okay. You do not need to shuffle the deck. Use a randomized algorithm to access a node. In other words, you shuffle during the deal instead of before it.

Yes. You will gain experience.

Kuphryn