This is the output here:
cpoints[0]->x=180
cpoints[0]->y=50
cpoints[1]->x=180
cpoints[1]->y=20
cpoints[2]->x=230
cpoints[2]->y=70
But it is system dependent. Because "long" in Visual C++ will be the same
as "int".
In which system did you test?
Best,
Scuri
Em qui., 16 de jul. de 2020 às 17:55, Ranier Vilela <ranier_...@hotmail.com>
escreveu:
> De: Antonio Scuri <antonio.sc...@gmail.com>
> Enviado: quinta-feira, 16 de julho de 2020 19:00
> Para: IUP discussion list.
> Assunto: Re: [Iup-users] IUP assorted issues (part IV)
>
> > Yes, there are two integers there. And we provide an array with twice
> the size, but count still contains just the >number of points. It is
> correct.
> IMHO, I can't see how this can work.
>
> #include <stdio.h>
>
> typedef struct CPOINT {
> long x;
> long y;
> } POINT, *PPOINT;
>
>
> void cast_to_point(int * ipoints, int count)
> {
> POINT * cpoints;
> int i;
>
> cpoints = (POINT*) ipoints;
> for(i = 0; i < count; ++i) {
> printf("cpoints[%d]->x=%ld\n", i, cpoints[i].x);
> printf("cpoints[%d]->y=%ld\n", i, cpoints[i].y);
> }
> }
>
> int main()
> {
> int ipoints[6];
>
> ipoints[0] = 180;
> ipoints[1] = 50;
> ipoints[2] = 180;
> ipoints[3] = 20;
> ipoints[4] = 230;
> ipoints[5] = 70;
>
> cast_to_point(ipoints, 3);
> }
>
> output:
> cpoints[0]->x=214748364980
> cpoints[0]->y=85899346100
> cpoints[1]->x=300647710950
> cpoints[1]->y=0
> cpoints[2]->x=0
> cpoints[2]->y=135050311015237
>
> I think is better declare a struct point for the IUP use.
>
> typedef struct IUP_POINT {
> long x;
> long y;
> } point_t,;
>
> regards,
> Ranier Vilela
>
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> Iup-users@lists.sourceforge.net
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