OJ Shape 变颜色

问题：

Problem M: Shape系列-6

Time Limit: 1 Sec  Memory Limit: 128 MB
Submit: 210  Solved: 165
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Description

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
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:"< cout<<"MyShape1 price:"< cout<<"MyShape2 area:"< cout<<"MyShape2 price:"< cout<<"MyShape3 area:"< cout<<"MyShape3 price:"<   return 0;
}

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MyShape类的area与price的值。

Sample Output

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

 

代码：

#include
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;
};
MyShape::MyShape(int c, double w,double h,double b,double h1,double r,double s):Shape(c),Rectangle(c,w,h),Triangle(c,b,h1),Circle(c,r),sign(s){}
double MyShape::area()
{
    double area;
        area=width*Rectangle::height+0.5*base*Triangle::height+PI*radius*radius;
    return area;
}
 double MyShape::price()
 {
 double price;
    if(sign==1)
        price=MyShape::area()*color;
    else if(sign==2)
        price=MyShape::area()*color+PI*radius*radius;
    else if(sign==3)
        price=MyShape::area()*color+0.5*base*Triangle::height+PI*radius*radius*2;
    return price;
 }
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:"<

 

运行结果：