#include <stdio.h>
#include <stdlib.h>
struct point {
  int x;
  int y;
};

struct {
  int x;
  int y;
} point2;

struct point3 pt;

struct point3 {
  int x;
  int y;
};

struct rect {
  struct point pt1;
  struct point pt2;
};

struct point makepoint(int, int);
struct point *makepoint_p(int, int);

int main() {
  struct point p = {2, 3};
  printf("x: %d, y: %d\n", p.x, p.y);

  struct rect r1 = {{2, 3}, {3, 4}};
  printf("pt1.x: %d, pt1.y: %d, pt2.x: %d, pt2.y: %d\n", r1.pt1.x, r1.pt1.y,
         r1.pt2.x, r1.pt2.y);

  struct point p2 = makepoint(3, 4);
  printf("x: %d, y: %d\n", p2.x, p2.y);

  struct point *p3 = makepoint_p(3, 4);
  printf("x: %d, y: %d\n", p3->x, p3->y);
  free(p3);
}

struct point makepoint(int x, int y) {
  struct point p = {x, y};
  return p;
}

struct point *makepoint_p(int x, int y) {
  struct point *p = malloc(sizeof(struct point));
  p->x = x;
  p->y = y;

  return p;
}