/*
 * Test point2d and triangle data structures, distance() and area() functions
 */
 
 #include <stdio.h>
 #include "geom.h"
 
 double distance(struct point2d u, struct point2d v);
 double area(struct triangle t);
 
 int main(void)
 {
     struct point2d u = {3., 4.};
     struct point2d v = {0., 0.};
     struct point2d q = {3., 0.};
     struct triangle t = {u, v, q};
     double d, aa;
     
     printf("x = %f, y = %f\n", u.x, u.y);
     printf("a = (%f, %f)  b = (%f, %f)  c = (%f, %f)\n", t.a.x, t.a.y, t.b.x, t.b.y, t.c.x, t.c.y);

     d = distance(u, v);
     printf("distance = %f\n", d);

     aa = area(t);
     printf("area = %f\n", aa);

     return 0;
 }