Erm...If this isn't how you declare an array, then I'm lost

This is a discussion on Erm...If this isn't how you declare an array, then I'm lost within the C++ Programming forums, part of the General Programming Boards category; Code: #include <SDL.h> #include "Sprites.h" #include "Images.h" Sprite::Sprite(SDL_Surface *img, int dimenX, int dimenY) { Sprite::framesF[4][2] = { { dimenX, dimenY ...

  1. #1
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    Exclamation Erm...If this isn't how you declare an array, then I'm lost

    Code:
    #include <SDL.h>
    #include "Sprites.h"
    #include "Images.h"
    
    Sprite::Sprite(SDL_Surface *img, int dimenX, int dimenY)
    {
    	Sprite::framesF[4][2] = { { dimenX, dimenY }, { dimenX, dimenY }, { dimenX, dimenY }, { dimenX, dimenY } }; //at the first curly bracket, it's saying an expression was expected
    }
    So, I'm completely lost as to how to declare this array. Everything is already setup in the Sprites.h header, so framesF, the constructor, and class are initialized correctly. I'm just not sure why this won't take my declaration.

  2. #2
    Or working on it anyways mramazing's Avatar
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    You can't do that because you already declared the variable framesF
    -- Will you show me how to c++?

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    Angry

    Then how am I supposed to give it value? It wont let me in the header.

  4. #4
    Registered User whiteflags's Avatar
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    Assign each element individually.

  5. #5
    Algorithm Dissector iMalc's Avatar
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    Quote Originally Posted by whiteflags View Post
    Assign each element individually.
    Or initialise a local array that way and then std::copy it across to the member variable.
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    I think the new C++ standard allows exactly that sort of initialization. you'll need to use visual studio 2010 or GCC 4.4.0 or greater (as examples... there maybe other compilers that support it) to use that new feature.

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    I am using VS 2010..

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    if framesF is a member of Sprite, you're trying to assign that array (via initializer list) to index 2 of index 4 in the 2-dimensional array, which I'm guessing is not an object that can be initialized this way.

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    @Elkvis, yeah, I've thought about that while I was at school..

  10. #10
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    try this:
    Code:
    Sprite::Sprite(SDL_Surface *img, int dimenX, int dimenY) :
        framesF({ { dimenX, dimenY }, { dimenX, dimenY }, { dimenX, dimenY }, { dimenX, dimenY } })
    {
    	
    }
    assuming that your class is declared something like this:

    Code:
    class Sprite
    {
    public:
        Sprite(SDL_Surface* img, int dimenX, int dimenY);
    private:
        int framesF[4][2];
    };

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