#include <stdio.h>

struct Coordenada{
  double x;
  double y;
};
typedef struct Coordenada   Coordenada;


int main(){
  Coordenada c1, c2, *c3, *c4;

  c3 = &c1;
  c4 = &c2;

  c1.x = -1;
  c1.y = -1.5;

  c2.x = 2.5;
  c2.y = -5;

  (*c3).x = 1.5;
  (*c3).y = 1.5;
  c4->x = -1;
  c4->y = -1;


  printf("Coordenadas de c1: (%lf,%lf)\n",c1.x, c1.y);
  printf("Coordenadas de c2: (%lf,%lf)\n",c2.x, c2.y);
}