Re: Constructing Objects of a Class

From:
"Jim Langston" <tazmaster@rocketmail.com>
Newsgroups:
comp.lang.c++
Date:
Mon, 5 Mar 2007 23:19:39 -0800
Message-ID:
<kC8Hh.1120$Z%4.803@newsfe06.lga>
<kylemort@gmail.com> wrote in message
news:1173161011.375115.282750@v33g2000cwv.googlegroups.com...

I am currently using a class (Card) to represent a card in a deck of
cards. The class has a constructor:
Card::Card(int num, int su)
{
  suit = su;
  number = num;
}

and I am trying to create multiple objects of that class (52 to be
exact). As I am learning C++ (already know Java, Visual Basic and C#)
I am not sure how to instantiate an object of that class. I am trying
to use

deck = gcnew Card(plcmnt[i], ((int)plcmnt[i] / 13));

but I am running into problems. Any help is greatly appreciated


I don't know what gcnew is supposed to be. Or plcmt. Nor how you delared
deck.

The simplest, of course, is simply:

Card card( 1, 1 );

If you want to make it using new it would be:
Card* card = new card( 1, 1 );

Now, it seems you want a deck of cards, 52. Do you want a vector? Then
this would work:

std::vector<Card> Deck;
for ( int Suit = 0; Suit < 4; ++Suit )
   for ( int Rank = 0; Rank < 13; ++ Rank )
      Deck.push_back( Card( Rank, Suit ) );

Or do you want Deck to be soemthing else?

Incidently, your constructor would probalby be better written as:

Card::Card(int num, int su): Suit( su ), number( num )
{
}

This uses what is called the "initialization list". For integers, such as
this, it's trivial, but for other things can be not so trivial.

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