Thread: Overloading the >> operator problem splitting the input

  1. #1
    Registered User
    Join Date
    Nov 2012

    Overloading the >> operator problem splitting the input


    I am trying to overload the input operator in the following manner:

    I have a playing card class that that contains two private members: rank stores the value of a card, suit stores the suit of the card.

    The >> operator should accept cards in the following manner:


    where 7S represents the 7 of spades
    where KH represents the king of hearts
    where 3D represents the 3 of diamonds

    For the first example, internally, this would occur within an object of the playing card class:

    rank = Seven
    suit = Spades

    I have created two enum types to use:

    enum Rank {Two ... Ace};
    enum Suit {Spades ... Hearts};
    So my challenge is I am unsure as how to split that one value from stdin into two usable values

    istream& operator>> (istream& in, Card& c)
            in >> c;            //Need help with implementation
            return in;

  2. #2
    Registered User
    Join Date
    Jan 2011
    how about something like this, put into a function:
      string card;
      cin >> card;
      rank = card[0];
      suit = card[1];
    Then do whatever you want with it, no need to overload the operator.

  3. #3
    Registered User
    Join Date
    Apr 2006
    In short, you need to read the characters in, convert them in the proper members of card field values, and handle errors in formatting correctly.
    It is too clear and so it is hard to see.
    A dunce once searched for fire with a lighted lantern.
    Had he known what fire was,
    He could have cooked his rice much sooner.

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