[sclug] g++ c++ question

[Tim Sutton]

Hi 

Many thanks for your reply - that seems to sort my problem out.

Regards

Tim


On Thursday 11 September 2003 14:40, Simon Heywood wrote:
> On Thu, Sep 11, 2003 at 03:14:40PM +0100, Tim Sutton wrote:
> > dataprocessor.cpp:780: error: ISO C++ forbids variable-size array `
> >
> > The offending code snippet looks like this:
> >
> >        int myArrayLengthInt = theClimateVector.size();
> >        float myClimateArray[myArrayLengthInt];
>
> I'm surprised that this compiled at all. You're generally not allowed to
> create an array using a variable as the array size; one tends to use a
> compile time constant for such things.
>
> The C way to do it is with malloc() but in C++ you can do something like
> this.
>
> 	float *myClimateArray = new float[theClimateVector.size()];
>
> Then you can use things like "myClimateArray[0] = 2.71828f". Not
> particularly unpleasant.
>
> > 1) Did gcc / g++ 3.3 introduce some incompatiblility / stricter standards
> > checking that is affecting me?
>
> Presumably.
>
> S.
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-- 
Tim Sutton
BDWorld Middleware Programmer
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