Declaring an array of classes...

It seems that these bits of code don't work:

Code:

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    CP wPawn('W')[8]; //expected a semi-colon

    CP wPawn[8]('W'); //bad array initializer

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The class:

Code:

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class CP
    {
      public:
              CP(char color);           
              ~CP();
              bool isWhite();
      private:
              char symbol;
              bool white;   
      friend class square;
    };

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Should I just create a default constructor and declare the color for each individual object through a member function? Apparantly its impossible to define an array like that... If Anyone could tell me why, I would like to know.

an array of classes is just like an array of ints, ie: int myInts[8];
that creates 8 ints, each seperate from the other. to access or set the value they contain you must do something like: myInts[2] = 3;

try and apply this to your situation :)

You cannot specify a constructor argument when declaring an array of class objects unless you use an array initializer and initialize each one individually. You should use a vector, which is usually a better option than an array anyway. IMO it is definitely better than adding a default constructor when the class design doesn't call for one.

nadroj: yes, I know how to do that, read the whole topic before you post, not just the title. Thanks anyway.

Daved: Ok, I've never used vecotrs before, but I'll look it up, thanks.

Quote:

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yes, I know how to do that, read the whole topic before you post, not just the title. Thanks anyway.

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i did read the whole thread so dont assume i didnt, thanks.

what you want to do is create an array of 8 objects of [whatever] type and call the constructor for each at the same time, correct?

>You cannot specify a constructor argument when declaring an array of class objects.
Array initializer?

You cannot specify a constructor argument when declaring an array of class objects unless you use an array initializer.

But look up vector anyway, it is a good option.

Solution:

Code:

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vector <CP> wPawn('W'); //

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This declares a vector (essentially a resizeable array) of the CP class using a constructor with parameters. It seems to dodge the previous syntax errors associated the normal array. However, I did have to declare an empty CP default constructor for it to work. Thanks, Daved.

To make a vector of size 8 all initialized with 'W' you would use this syntax:

Code:

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vector <CP> wPawn(8, 'W');

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Ooooooh, I wish I looked at that yesterday...

Quote:

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Originally Posted by Daved

You cannot specify a constructor argument when declaring an array of class objects unless you use an array initializer and initialize each one individually. You should use a vector, which is usually a better option than an array anyway. IMO it is definitely better than adding a default constructor when the class design doesn't call for one.

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Isn't constructor called automatically?

It is. What's your point?