#include "shape.h" int main() { shape *s; s = new rectangle(4, 3); s->draw(); shape *arr[5]; arr[0] = new rectangle(6, 4); arr[1] = new square(7); arr[2] = new triangle(3, 4); arr[3] = new circle(5); for (int i = 0; i < 4; i++) arr[i]->draw(); }