[YTU]_2918( Shape系列-4)

2019-04-14 20:09发布

站内文章 / 模拟电子
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Description

小聪送给小亮和小华的形状他们都很喜欢,小亮和小华非要比一下他们两个的形状，来看看小聪更爱谁，请完成RsubC类。RsubC类中包括Rectangle类和Circle类的数据成员，新增布尔类型的数据成员sign（sign等于0时，新面积等于Rectangle+Circle，sign等于1时，新面积等于Rectangle-Circle），新定义了求面积的成员函数area()。但是小聪没有为RsubC类写构造函数和成员函数，请帮助小聪完成RsubC类。小强写的文件头和Shape类#include #define PI 3.14 using namespace std; 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 10000; }小聪写的Rectangle类 class Rectangle:public Shape { public:  Rectangle(int c,double w,double h);  double getwidth();  double getheight();  double area();  double price(); protected:  double height;  double width; }; Rectangle::Rectangle(int c,double w,double h):Shape(c) {  width=w;  height=h; } double Rectangle::getwidth() {  return width; } double Rectangle::getheight() {  return height; } double Rectangle::area() {  return height*width; } double Rectangle::price() {  return height*width*color; }小聪写的Circle类 class Circle:public Shape { public:  Circle(int c,double r);  double getradius();  double area();  double price(); protected:  double radius; };Circle::Circle(int c,double r):Shape(c) {  radius=r; } double Circle::getradius() {  return radius; }double Circle::area() {  return PI*radius*radius; } double Circle::price() {  return PI*radius*radius*color; }小聪的测试函数：int main(){RsubC rc=RsubC(1,2,3,1,1); cout<<"RsubC area:"<}提示：不用提交全部程序，只提交补充部分。

Input

无

Output

输出小聪测试的RsubC的面积。

Sample Output

RsubC area:2.86#include#define PI 3.14using namespace std;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 10000;} class Rectangle:public Shape{public: Rectangle(int c,double w,double h); double getwidth(); double getheight(); double area(); double price();protected: double height; double width;};Rectangle::Rectangle(int c,double w,double h):Shape(c){ width=w; height=h;}double Rectangle::getwidth(){ return width;}double Rectangle::getheight(){ return height;}double Rectangle::area(){ return height*width;}double Rectangle::price(){ return height*width*color;} class Circle:public Shape{public: Circle(int c,double r); double getradius(); double area(); double price();protected: double radius;}; Circle::Circle(int c,double r):Shape(c){ radius=r;}double Circle::getradius(){ return radius;} double Circle::area(){ return PI*radius*radius;}double Circle::price(){ return PI*radius*radius*color;}class RsubC:public Rectangle,public Circle{public: RsubC(int c,double w,double h,double r,bool s):Rectangle(c,w,h),Circle(c,r),sign(s){} float area();private: bool sign;};float RsubC::area(){ if(sign==1) return Rectangle::area()-Circle::area(); if(sign==1) return Rectangle::area()+Circle::area();}int main(){ RsubC rc=RsubC(1,2,3,1,1);cout<<"RsubC area:"<

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