Question

设计一个圆类（circle）,数据成员包括radius(圆半径)；成员函数包括： 1、构造函数（要求对构造函数进行重

Answer 1

class circle{
public:
circle(){radius=0;}
circle(double radiuv){radius=radiuv;}
void getparimeter(){ parimeter=2*3.14*radius; }
void getarea() { area=3.14*radius*radius; }
void print(){
cout<<"The radius of the circle is "<<radius<<endl;
cout<<"The parimeter of the circle is "<<parimeter<<endl;
cout<<"The area of the circle is "<<area<<endl;
}
private:
double radius;
double parimeter;
double area;
}