int main(int argc, char** argv, char** envp) {
rectangle* r=create_rectangle(5,6);
printf("r is at %p\n", r);
printf("the area of the rectangle is %d\n", rectangle_area(r));
rectangle_destroy(r);
rectangle* r2=(rectangle*)alloca(sizeof_rectangle());
construct_rectangle(r2, 7, 8);
printf("r2 is at %p\n", r2);
printf("the area of the rectangle is %d\n", rectangle_area(r2));
int i;
rectangle* myrectangles=(rectangle*)malloc(100*sizeof_rectangle());
char* p=(char*)myrectangles;
for(i=0;i<100;i++) {
construct_rectangle((rectangle*)p, 7, 8);
p+=sizeof_rectangle();
}
p=(char*)myrectangles;
for(i=0;i<100;i++) {
rectangle_destroy((rectangle*)p);
p+=sizeof_rectangle();
}
return EXIT_SUCCESS;
}
int main(int argc, char** argv, char** envp) {
rectangle* r=(rectangle*)malloc(sizeof(rectangle));
rectangle_set_width(r,5);
rectangle_set_height(r,6);
printf("the area of the rectangle is %d\n", rectangle_area(r));
return 0;
}
int main() {
assert(EQ(20, rectangle_area(point(1, 1), point(5, 6))));
assert(point_in_rectangle(point(0, -1), point(0, -3), 3, 2));
assert(point_in_rectangle(point(2, -2), point(3, -3), -3, 2));
assert(!point_in_rectangle(point(0, 0), point(3, -1), -3, -2));
assert(point_in_rectangle(point(2, -2), point(3, -3), point(0, -1)));
assert(!point_in_rectangle(point(-1, -2), point(3, -3), point(0, -1)));
point p, q;
assert(-1 == rectangle_intersection(point(0, 0), point(1, 1),
point(2, 2), point(3, 3)));
assert(0 == rectangle_intersection(point(1, 1), point(7, 7),
point(5, 5), point(0, 0), &p, &q));
assert(EQP(p, point(1, 1)) && EQP(q, point(5, 5)));
assert(1 == rectangle_intersection(point(1, 1), point(0, 0),
point(0, 0), point(1, 10), &p, &q));
assert(EQP(p, point(0, 0)) && EQP(q, point(1, 1)));
assert(2 == rectangle_intersection(point(0, 5), point(5, 7),
point(1, 6), point(2, 5), &p, &q));
assert(EQP(p, point(1, 6)) && EQP(q, point(2, 5)));
return 0;
}
int main(int argc, char** argv, char** envp) {
rectangle* r=create_rectangle(5,6);
printf("the area of the rectangle is %d\n", rectangle_area(r));
rectangle_destroy(r);
return 0;
}