Shape系列-5

Shape系列-5

时间: 1ms        内存:128M

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<iostream>
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="<<rc1.area()<<endl;
 
 cout<<"rc2 area="<<rc2.area()<<endl;

 return 0;
}

提示:不用提交全部程序,只提交补充部分。


输入:

输出:

输出JC和Katy测试的RsubC类的面积。

示例输入:

示例输出:

rc1 area=2.86
rc2 area=14.56

提示:

参考答案(内存最优[1084]):

#include<stdio.h>
int main()
{
	printf("rc1 area=2.86\nrc2 area=14.56");
} 

参考答案(时间最优[0]):


#include<iostream>
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;
}

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;
};RsubC1::RsubC1(int c,double w,double h,double r,bool s):rectangle(c,w,h),circle(c,r),sign(s)
{
}
double RsubC1::area()
{
    if(sign==1)
        return rectangle.area()-circle.area();
}
int main()
{
	RsubC1 rc=RsubC1(3,2,3,1,1);
	cout<<"area="<<rc.area()<<endl;
	return 0;
}

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