YTU 2918: Shape系列-5

YTU 2918: Shape系列-5

2919: Shape系列-5

时间限制: 1 Sec   内存限制: 128 MB

提交: 251

解决: 199

题目描述

JC和Kitty听说小亮和小华有了Rectangle和Circle并用RsubC类比较了大小，于是想借小亮和小华的Rectangle和Circle来仿制自己的形状，于是JC和Kitty完成了自己的rectangle类和circle类，他们两个也要比较一下形状大小。但是JC和Kitty没有为RsubC1类（其中的布尔类型sign等于0时，新面积等于Rectangle+Circle，sign等于1时，新面积等于Rectangle-Circle）写构造函数与area面积函数，请帮助JC和Kitty完成RsubC1类。

//小强写的文件头和各种类

#include using namespace std; #define pi 3.14 class Shape { public: Shape(); Shape(int c); int getcolor(); double area(); protected: int color; }; Shape::Shape() { color=0; } Shape::Shape(int c):color(c){} int Shape::getcolor() { return color; } double Shape::area() { return 1000; } class Rectangle:public Shape { public: Rectangle(); Rectangle(int c, double w,double h); double getwidth(); double getheight(); double area(); double price(); protected: double width,height; }; Rectangle::Rectangle() { width=10;height=5; } Rectangle::Rectangle(int c, double w,double h):Shape(c) { width=w; height=h; } double Rectangle::getwidth() { return width; }double Rectangle::area() { return width*height; } double Rectangle::getheight() { return height; }double Rectangle::price() { return color*width*height; } class Circle:public Shape { public: Circle(); Circle(int c,double r); double getradius() { return radius; } double area(); protected: double radius; }; Circle::Circle() { radius=10; } Circle::Circle(int c,double r):Shape(c) { radius=r; } double Circle::area() { return radius*radius*pi; }// RsubC1类class RsubC1:public Shape { public: RsubC1(int c,double w,double h,double r,bool s); double area(); private: Rectangle rectangle; Circle circle; bool sign; };//JC和Katy的测试函数：int main() { RsubC1 rc1=RsubC1(3,2,3,1,1); RsubC1 rc2=RsubC1(1,2,1,2,0); cout<<"rc1 area="<