2918: Shape系列-4
时间限制: 1 Sec 内存限制: 128 MB提交: 276 解决: 232
题目描述
小强写的文件头和Shape类
#include<iostream>
#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:"<<rc.area()<<endl;
return 0;
}
输入
无
输出
输出小聪测试的RsubC的面积。
样例输出
RsubC area:2.86
im0qianqian_站在回忆的河边看着摇晃的渡船终年无声地摆渡,它们就这样安静地画下黄昏画下清晨......
#include<iostream> #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; } 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 Shape { public: RsubC(int c,double w,double h,double r,bool s); double area(); private: Rectangle rectangle; Circle circle; bool sign; }; RsubC::RsubC(int c,double w,double h,double r,bool s):Shape(c),rectangle(c,w,h),circle(c,r),sign(s) {} double RsubC::area() { if(sign==0) return rectangle.area()+circle.area(); else return rectangle.area()-circle.area(); } int main() { RsubC rc=RsubC(1,2,3,1,1); cout<<"RsubC area:"<<rc.area()<<endl; return 0; }