#include <iostream>
class Shape {
public:
virtual void draw() const {
std::cout << "Drawing a shape." << std::endl;
}
};
class Circle : public Shape {
public:
void draw() const override {
std::cout << "Drawing a circle." << std::endl;
}
};
class Square : public Shape {
public:
void draw() const override {
std::cout << "Drawing a square." << std::endl;
}
};
int main() {
Shape* shape1 = new Circle();
Shape* shape2 = new Square();
shape1->draw();
shape2->draw();
delete shape1;
delete shape2;
return 0;
}