#include "mypoint.h"
#include <stdio.h>

int strange_getX(myPt_t pt) {
  return 0;
}

int main(int argc, char **argv) {
  myPt_t p1 = new_myPt(3,4);
  myPt_t p2 = new_myPt(0,0);
  
  printf("\n%d %d\n",
	 (int)(p1->distance_to_origin1(p1)),(int)(p1->distance_to_origin2(p1)));
  
  // wrong use, prevented by an OO language:
  printf("\n%d %d\n",
	 (int)(p1->distance_to_origin1(p2)),(int)(p1->distance_to_origin2(p2)));
  // (you can prevent this in C via "incomplete struct types" but we have not
  // seen those)

  // not allowed in most OO languages: method update!
  p1->getX = strange_getX;
  printf("\n%d %d\n",
	 (int)(p1->distance_to_origin1(p1)),(int)(p1->distance_to_origin2(p1)));
  printf("\n%d %d\n",
	 (int)(p2->distance_to_origin1(p2)),(int)(p2->distance_to_origin2(p2)));
  return 0;
}