Christian: replacing '&' with '*' will help. -best, Pasha
Christian Hansen wrote:
>
> Hi everybody,
>
> I have a problem using TVector2. In the attached program I want the value
> of the vector 'v1' to change after have used the operator '-=', but as u
> can see if you run the program nothing happens. Ofcourse this is just a
> stupid pointer-referens misstake made by me, but all other ways with the
> pointers and references I've tried have just given me the error message
>
> *** Break *** segmentation violation
>
> or something similar.
> If anyone could found out the correct way to use TVector2 in my program I
> would be very glad.
>
> Cheers
> / Christian Hansen
>
> ----------------------------------------------------------------------------------------------------------------------------------
> # include <math.h>
> # include <iostream.h>
>
> gSystem->Load("libPhysics");
>
> void test() {
> TVector2 *v1 = new TVector2(4, 2);
> TVector2 *vunit1 = new TVector2(0,0);
> *vunit1 = v1->Unit();
> cout << "Before Vx = " << v1->X() << endl;
> &v1 -= &vunit1;
> cout << "After Vx = " << v1->X() << endl;
> }
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