设计一个园类circle和一个桌子类table,circle类包括私有数据成员半径radius和求圆面积得成员函数get

class circle{ float radius; float area;public: circle(float r) { radius=r; } float getarea(void) { area=3。14*radius*radius; return area;}};class table{ float height;public: table(float h) { height=h;} float getheight(void) { return height;}};class roundtable : public table, public circle{ TColor color;public: roundtable(float h,float r,TColor c):circle(r), table(h) { color=c;} TColor getcolor(void) { return color;}};