명품 C++ Programming 실습문제 8장 1번

#include <iostream>
#include <string>
using namespace std;
 
class Circle {
    int radius;
public:
    Circle(int radius = 0) { this->radius = radius; }
    int getRadius() { return radius;}
    void setRadius(int radius) { this->radius = radius; }
    double getArea() { return 3.14*radius*radius; }
};
 
class NamedCircle :public Circle {
    string name;
public:
    NamedCircle(int radius, string name) :Circle(radius) { this->name = name; }
    void show() { cout << "반지름이 " << getRadius() << "인 " << name << '\n'; }
};
 
int main() {
    NamedCircle waffle(3, "waffle");
    waffle.show();
}