#include "pos.h"
#include "utils.h"
#include <os.h>
Pos* Pos_add(Pos *P, int x, int y)
{
    Pos *New = malloc(sizeof(Pos*));
    
    New->x = P->x + x;
    New->y = P->y + y;
    New->next = NULL;
    
    P->next = New;
    
    return New;
}
Pos* Pos_pop(Pos *P)
{
  if (P->next == NULL)
  {
    return P;
  }
  else
  {
    Pos *Next = P->next;
    free(P);
    return Next;
  }
}