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

#define log_2d(pointer)                                                        \
  printf("Value:  %p, %u, %u\n", pointer, pointer->x, pointer->y)

#define log_3d(pointer)                                                        \
  printf("Value:  %p, %u, %u, %u\n", pointer, pointer->x, pointer->y,          \
         pointer->z)

typedef struct Point2D {
  int x, y;
} Point2D;

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

int main(void) {
  printf("Allocation Thinkering: \n");
  Point2D *heap_point_2d = malloc(sizeof(Point2D));
  Point2D *heap_point_2d_2 = malloc(sizeof(Point2D));
  Point3D *heap_point_3d;
  log_2d(heap_point_2d);
  *heap_point_2d = (Point2D){1, 2};
  *heap_point_2d_2 = (Point2D){3, 4};
  heap_point_3d = (Point3D *)(heap_point_2d);
  log_3d(heap_point_3d);
  log_2d(heap_point_2d);
  log_2d(heap_point_2d_2);
  free(heap_point_2d);
  log_2d(heap_point_2d);
  log_2d(heap_point_2d_2);
  log_3d(heap_point_3d);
  heap_point_2d = malloc(sizeof(Point2D));
  *heap_point_2d = (Point2D){5, 6};
  log_2d(heap_point_2d);
  log_2d(heap_point_2d_2);
  log_3d(heap_point_3d);
  free(heap_point_2d_2);
  log_2d(heap_point_2d);
  log_2d(heap_point_2d_2);
  log_3d(heap_point_3d);

  exit(0);
}