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Shape系列-6

code

Shape系列-6

时间： 1ms        内存：128M

描述：

Shape系列终于快完成了，小聪可以歇一下了。但是这个时候JC和Kitty把自己的矩形和圆形做好，想给小聪比试一下，小聪也不示弱，拿出来自己的做出的三角形和他们一分高下。他们的比较方式是新建了一个MyShape类来进行比较，请帮小聪完成MyShape类的构造函数，area与price函数（price函数的作用是计算面积与color的乘积）。

注：MyShape类数据成员sign有三个值1、2、3，它们在price函数中决定color的叠加。蓝色为color，红色为color+1，紫色为color+2

sign为1 时                                   sign为2 时                             sign为3时
 
                                               
 
#include<iostream>
using namespace std;
#define PI 3.14
class Shape
{
public:
 Shape(int c);
protected:
 int color;
};
Shape::Shape(int c)
{
 color=c;
}
class Rectangle:virtual public Shape
{
public:
 Rectangle(int c,double w,double h);
protected:
 double width,height;
};

Rectangle::Rectangle(int c,double w,double h):Shape(c)
{
 width=w;height=h;
}
class Triangle: virtual public Shape
{
public:
 Triangle(int c,double b,double h);
protected:
 double base,height;
};
Triangle::Triangle(int c,double b,double h):Shape(c)
{
 base=b;height=h;
}
class Circle:virtual public Shape
{
public:
 Circle(int c,double r);
protected:
 double radius;
};
Circle::Circle(int c,double r):Shape(c)
{
 radius=r;
}
class MyShape:public Rectangle, public Triangle, public Circle
{
public:
 MyShape(int c, double w,double h,double b,double h1,double r,double s);
 double area();
 double price();
private:
 int sign;
};

int main()
{
  MyShape ms1=MyShape(1,1,3,1,2,1,3);
 MyShape ms2=MyShape(1,1,3,1,2,1,2);
 MyShape ms3=MyShape(1,1,3,1,2,1,1);

cout<<"MyShape1 area:"<<ms1.area()<<endl;
cout<<"MyShape1 price:"<<ms1.price()<<endl;
cout<<"MyShape2 area:"<<ms2.area()<<endl;
cout<<"MyShape2 price:"<<ms2.price()<<endl;
cout<<"MyShape3 area:"<<ms3.area()<<endl;
cout<<"MyShape3 price:"<<ms3.price()<<endl;
  return 0;
}

提示：不用提交全部程序，只提交补充部分

输入：

无

输出：

输出小聪测试的MyShape类的area与price的值。

示例输入：

示例输出：

MyShape1 area:7.14
MyShape1 price:14.42
MyShape2 area:7.14
MyShape2 price:10.28
MyShape3 area:7.14
MyShape3 price:7.14

提示：

参考答案（内存最优[0]）：


#include<iostream>
using namespace std;
#define PI 3.14
class Shape
{
public:
 Shape(int c);
protected:
 int color;
};
Shape::Shape(int c)
{
 color=c;
}
class Rectangle:virtual public Shape
{
public:
 Rectangle(int c,double w,double h);
protected:
 double width,height;
};
Rectangle::Rectangle(int c,double w,double h):Shape(c)
{
 width=w;height=h;
}
class Triangle: virtual public Shape
{
public:
 Triangle(int c,double b,double h);
protected:
 double base,height;
};
Triangle::Triangle(int c,double b,double h):Shape(c)
{
 base=b;height=h;
}
class Circle:virtual public Shape
{
public:
 Circle(int c,double r);
protected:
 double radius;
};
Circle::Circle(int c,double r):Shape(c)
{
 radius=r;
}
class MyShape:public Rectangle, public Triangle, public Circle
{
public:
 MyShape(int c, double w,double h,double b,double w1,double r,double s);
 double area();
 double price();
private:
 int sign;
};

MyShape::MyShape(int c, double w,double h,double b,double w1,double r,double s)
:Shape(c),Rectangle(c,w,h),Triangle(c,b,w1),Circle(c,r)
{
	sign=s;
}
double MyShape::area()
{
	double a;
	a=width*Rectangle::height+
	(base*Triangle::height)/2+PI*radius*radius;
	return a;		
}

double MyShape::price()
{
	double p,ra,ta,ca;
	ra=width*Rectangle::height;
	ta=width*Triangle::height/2;
	ca=PI*radius*radius;
	if(sign==1)
		p=color*(ra+ta+ca);
	else if(sign==2)
		p=color*ra+color*ta+(color+1)*ca;
		else p=color*ra+(color+1)*ta+(color+2)*ca;
	return p;
}
int main()
{
  MyShape ms1=MyShape(1,1,3,1,2,1,3);
 MyShape ms2=MyShape(1,1,3,1,2,1,2);
 MyShape ms3=MyShape(1,1,3,1,2,1,1);

cout<<"MyShape area:"<<ms1.area()<<endl;
cout<<"MyShape price:"<<ms1.price()<<endl;
cout<<"MyShape area:"<<ms2.area()<<endl;
cout<<"MyShape price:"<<ms2.price()<<endl;
cout<<"MyShape area:"<<ms3.area()<<endl;
cout<<"MyShape price:"<<ms3.price()<<endl;
  return 0;
}

参考答案（时间最优[0]）：


#include<iostream>
using namespace std;
#define PI 3.14
class Shape
{
public:
 Shape(int c);
protected:
 int color;
};
Shape::Shape(int c)
{
 color=c;
}
class Rectangle:virtual public Shape
{
public:
 Rectangle(int c,double w,double h);
protected:
 double width,height;
};
Rectangle::Rectangle(int c,double w,double h):Shape(c)
{
 width=w;height=h;
}
class Triangle: virtual public Shape
{
public:
 Triangle(int c,double b,double h);
protected:
 double base,height;
};
Triangle::Triangle(int c,double b,double h):Shape(c)
{
 base=b;height=h;
}
class Circle:virtual public Shape
{
public:
 Circle(int c,double r);
protected:
 double radius;
};
Circle::Circle(int c,double r):Shape(c)
{
 radius=r;
}
class MyShape:public Rectangle, public Triangle, public Circle
{
public:
 MyShape(int c, double w,double h,double b,double w1,double r,double s);
 double area();
 double price();
private:
 int sign;
};

MyShape::MyShape(int c, double w,double h,double b,double w1,double r,double s)
:Shape(c),Rectangle(c,w,h),Triangle(c,b,w1),Circle(c,r)
{
	sign=s;
}
double MyShape::area()
{
	double a;
	a=width*Rectangle::height+
	(base*Triangle::height)/2+PI*radius*radius;
	return a;		
}

double MyShape::price()
{
	double p,ra,ta,ca;
	ra=width*Rectangle::height;
	ta=width*Triangle::height/2;
	ca=PI*radius*radius;
	if(sign==1)
		p=color*(ra+ta+ca);
	else if(sign==2)
		p=color*ra+color*ta+(color+1)*ca;
		else p=color*ra+(color+1)*ta+(color+2)*ca;
	return p;
}
int main()
{
  MyShape ms1=MyShape(1,1,3,1,2,1,3);
 MyShape ms2=MyShape(1,1,3,1,2,1,2);
 MyShape ms3=MyShape(1,1,3,1,2,1,1);

cout<<"MyShape area:"<<ms1.area()<<endl;
cout<<"MyShape price:"<<ms1.price()<<endl;
cout<<"MyShape area:"<<ms2.area()<<endl;
cout<<"MyShape price:"<<ms2.price()<<endl;
cout<<"MyShape area:"<<ms3.area()<<endl;
cout<<"MyShape price:"<<ms3.price()<<endl;
  return 0;
}

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