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oop_in_c
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Added for cycle showing polymorphism

This commit is contained in:
Kolan Sh 2012-04-30 19:31:40 +04:00
parent 28285e9df3
commit ff5b65d70a
1 changed files with 19 additions and 12 deletions
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31
main.c
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@ -5,7 +5,8 @@
int main (int argc, char *argv[])
{
Figure *fig[2];
int i = 0;
Figure *fig[3];
fig[0] = Square_new ();
fig[1] = ColoredSquare_new ();
@ -14,19 +15,25 @@ int main (int argc, char *argv[])
((Square *) fig[0])->vtable->resize (fig[0], 2);
((Square *) fig[1])->vtable->resize (fig[0], 3);
fig[0]->vtable->draw (fig[0]);
fig[1]->vtable->draw (fig[1]);
fig[2] = fig[1]->vtable->clone (fig[1]);
((ColoredSquare *) fig[2])->vtable->set_color (fig[2], 3);
printf ("area(%lu) = %f\n",
(unsigned long) fig[0],
fig[0]->vtable->area (fig[0]));
printf ("area(%lu) = %f\n",
(unsigned long) fig[1],
fig[1]->vtable->area (fig[1]));
for (i = 0; i < sizeof (fig) / sizeof (Figure *); i++)
{
printf ("--- type = %s ---\n", fig[i]->vtable->type (fig[i]));
printf ("diag_length(%lu) = %f\n",
(unsigned long) fig[0],
((Square *) fig[0])->vtable->diag_length (fig[0]));
fig[i]->vtable->draw (fig[i]);
printf ("area(%lu) = %f\n",
(unsigned long) fig[i],
fig[i]->vtable->area (fig[i]));
printf ("diag_length(%lu) = %f\n",
(unsigned long) fig[i],
((Square *) fig[i])->vtable->diag_length (fig[i]));
puts ("---\n");
}
/*goto end;
err: