non-aggregate data, whats all that about?

This is a discussion on non-aggregate data, whats all that about? within the C++ Programming forums, part of the General Programming Boards category; I keep recieving loadsa errors about data being non-aggregate and stuff, please tell me what is aggregate / non-aggregate data, ...

  1. #1
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    Angry non-aggregate data, whats all that about?

    I keep recieving loadsa errors about data being non-aggregate and stuff, please tell me what is aggregate / non-aggregate data, how do I make my data aggregate and anythin else that I need to fo to sort this mess out!!!

  2. #2
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    Lightbulb still havin trouble!!!

    Does this mean that non-aggregate data is integers and stuff, and what does this mean ...

    Error: request for member `xyz' in `fTemp', which is of non-aggregate type `PLANE ()()

    could you please try and help me, would you need my source code to have more of an idea of what the problem is?

  3. #3
    and the hat of wrongness Salem's Avatar
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    > Does this mean that non-aggregate data is integers and stuff,
    Yes

    > Error: request for member `xyz' in `fTemp', which is of non-aggregate type `PLANE ()()
    It looks like you've tried to do something like fTemp.xyz or fTemp->xyz.

    PLANE ()() suggests that fTemp is a pointer to some kind of function.
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
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    Still Sutck!!!

    The fTemp is not a pointer (I don't think), it is just an object of class PLANE, anyway, can u look at this please and see if u have any idea of what is goin off ...

    This is the code which I think is relevant...

    class PLANE
    {public:
    XYZ xyz[3]; //XYZ = class containing v[3]
    int texture;
    int flags;
    PLANE()
    {};};


    PLANE get_plane(int n)
    {PLANE fTemp();
    fTemp.xyz[0]=cXYZ(xyz[n]); *1
    fTemp.xyz[1]=cXYZ(xyz[xyz[n].parent_index[0]]); *2
    fTemp.xyz[2]=cXYZ(xyz[xyz[n].parent_index[1]]); *3
    return fTemp; *4
    };


    Theses are the errors I get..

    *1 Error: request for member `xyz' in `fTemp', which is of non-aggregate type `PLANE ()()'
    *2 Error: request for member `xyz' in `fTemp', which is of non-aggregate type `PLANE ()()'
    *3 Error: request for member `xyz' in `fTemp', which is of non-aggregate type `PLANE ()()'
    *4 Error: conversion from `PLANE (*)()' to non-scalar type `PLANE' requested

    I am just looking for a zip program so that I can fit all of my project in 1 file, because I think that the theyre is more to the problem than just the above code!!!!

  5. #5
    zen
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    Try this -

    Code:
    class PLANE 
    {public: 
    	XYZ xyz[3]; //XYZ = class containing v[3] 
    	int texture; 
    	int flags; 
    	PLANE() {}//If there are no other constructors explicit declaration not needed
    }; 
    
    
    PLANE get_plane(int n) 
    {
    	PLANE fTemp; 
    	fTemp.xyz[0]=cXYZ(xyz[n]);  
    	fTemp.xyz[1]=cXYZ(xyz[xyz[n].parent_index[0]]);  
    	fTemp.xyz[2]=cXYZ(xyz[xyz[n].parent_index[1]]);  
    	return fTemp;  
    }

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