CODEWITHSUNDEEP
c++
Ryan Sayles
Ryan Sayles

Reputation: 3431

Use object in class function

I'm fairly new to C++ and I'm running into problems trying to use one class object in another class function. For example if I have:

#ifndef CARD_HPP
#define CARD_HPP
#include <string>

enum Suits
{
SPADES,
CLUBS,
HEARTS,
DIAMONDS
};

enum Values
{
TWO,
THREE,
FOUR,
FIVE,
SIX,
SEVEN,
EIGHT,
NINE,
TEN,
JACK,
QUEEN,
KING,
ACE
};


class Card
{
public:
    Card(Values value, Suits suit);
    Values getValue() const;
    Suits getSuit() const;
    void showCard();
    std::string toString(Values v);
    std::string toString(Suits s);

private:
    Suits suit;
    Values value;

};

and: 

#ifndef DECK_OF_CARDS_HPP
#define DECK_OF_CARDS_HPP

#include "card.hpp"
#include <vector>
#include <string>

Values enumValueOfIndex(int i);
Suits enumSuitOfIndex(int i);

class DeckOfCards
{
public:
    DeckOfCards();
    void shuffleDeck();
    void printDeck();
    Card drawCard();

private:
    const std::string suit_strings[4];
    const std::string value_strings[13];
    unsigned seed;
    Values values;
    Suits suits;
    std::string suit;
    std::string value;
    std::vector<Card> deck;
};

#endif

I'm having an error when in my Deck::printDeck() when trying to do:

Card card = deck.at(i); //I have already added 52 card objects to deck

The error I am getting is: 

error: non-object type 'Card (Values, Suits)' is not assignable
    card = deck.at(i);

I am essentially using old Java code to make this and that is essentially what I did. I don't know if I need to define/declare a Card object in my Deck header/source or even how to do that. I feel like this is a simple problem but I can't find any solution to it. Thank you for any help!

Upvotes: 0

Views: 71

Answers (2)

Victor
Victor

Reputation: 14573

Defining a copy-assignment constructor for your class will make the = (assignment operator) to run in your program. 

Card( const Card & input );

If you want to assign a special meaning for the = operator, then you should override it. Below you can find some resources that will help you:

  • C++ Primer 5th Edition book. Chapter 7.1.5 will help you understanding the class special functions
  • Here you will find some other references, that are free.
  • Here, you will find out more about operator overloading.

Upvotes: 0

πάντα ῥεῖ
πάντα ῥεῖ

Reputation: 1

Looks like you need to define a copy constructor and assignment operator, try adding:

Card(const Card& rhs);
Card& operator=(const Card& rhs);

Upvotes: 1

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