De: Antonio Scuri <[email protected]>
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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