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copied!<p>to add to John's answer:</p> <p>what you want to pass to the <code>shuffle</code> function is a deck of cards from the class <code>deckOfCards</code> that you've declared in main; however, the deck of cards or <code>vector<Card> deck</code> that you've declared in your class is private, so not accessible from outside the class. this means you'd want a getter function, something like this:</p> <pre><code>class deckOfCards { private: vector<Card> deck; public: deckOfCards(); static int count; static int next; void shuffle(vector<Card>& deck); Card dealCard(); bool moreCards(); vector<Card>& getDeck() { //GETTER return deck; } }; </code></pre> <p>this will in turn allow you to call your shuffle function from main like this:</p> <pre><code>deckOfCards cardDeck; // create DeckOfCards object cardDeck.shuffle(cardDeck.getDeck()); // shuffle the cards in the deck </code></pre> <p>however, you have more problems, specifically when calling <code>cout</code>. first, you're calling the <code>dealCard</code> function wrongly; as <code>dealCard</code> is a memeber function of a class, you should be calling it like this <code>cardDeck.dealCard();</code> instead of this <code>dealCard(cardDeck);</code>.</p> <p>now, we come to your second problem - print to standard output. you're trying to print your deal card, which is an object of type <code>Card</code> by using the following instruction:</p> <pre><code>cout << cardDeck.dealCard();// deal the cards in the deck </code></pre> <p>yet, the <code>cout</code> doesn't know how to print it, as it's not a standard type. this means you should <a href="http://en.cppreference.com/w/cpp/language/operators" rel="nofollow">overload</a> your <code><<</code> operator to print whatever you want it to print when calling with a <code>Card</code> type.</p>

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