#include <stdio.h>
#include <stdlib.h>

typedef struct point{
    int x;
    int y;
    int z;
}Point3D;

typedef struct point2 {
    int *points;
}Point3DArray;

void printPoint(Point3D p){
    printf("(%d, %d, %d)\n", p.x, p.y, p.z);
}

void printPoint2(Point3DArray p){
    printf("(%d, %d, %d)\n", p.points[0], p.points[1], p.points[2]);
}

int main() {
    Point3D p1;
    p1.x = 1;
    p1.y = 2;
    p1.z = 3;
    printPoint(p1);

    Point3D *p2 = malloc(sizeof(Point3D));
    p2->x = 4;
    p2->y = 5;
    p2->z = 6;
    printPoint(*p2);

    Point3DArray *p3 = malloc(sizeof(Point3DArray));
    p3->points = malloc(sizeof(Point3D) * 3);
    p3->points[0] = 7;
    p3->points[1] = 8;
    p3->points[2] = 9;
    printPoint2(*p3);

    return 0;
}