GESP 2024年3月 C++六级 单选题 第4题

class Circle {
private:
    double radius;
public:
    Circle(double r) : radius(r) {}
    double getArea() { return 3.14 * radius * radius; }
};

• A. Circle c = Circle(5.0); c.getArea(c);
• B. Circle c(5.0); getArea(c);
• C. Circle c = new Circle(5.0); c.getArea();
• D. Circle c(5.0); c.getArea();

正确答案：D