객체 포인터(Object Pointer) // 예제 4-1 #include using namespace std; class Circle { int radius; public: Circle(); Circle(int r); double getArea(); }; Circle::Circle() { radius = 1; } Circle::Circle(int r) { radius = r; } double Circle::getArea() { return 3.14 * radius * radius; } int main() { Circle donut; Circle pizza(30); cout
