第10週実験報告3

#include <iostream>
using namespace std;
class Point
{
public:
	Point(double x=0,double y=0);					 //    
	void setPoint(double,double);                  //     
	double getX( ) const {return x;}              // x  
	double getY( ) const {return y;}              // y  
	friend ostream & operator<<(ostream &,const Point &);//     “<<”
protected:										 //     
	double x,y;
};


//Point     
Point::Point(double a,double b)	
{
	x=a;
	y=b;
}
//  x y    
void Point::setPoint(double a,double b)  
{
	x=a;
	y=b;
}

ostream & operator<<(ostream &output,const Point &p)
{
	output<<"["<<p.x<<","<<p.y<<"]"<<endl;
	return output;
}

int main( )
{
	Point p(3.5,6.4); 
	cout<<"x="<<p.getX( )<<",y="<<p.getY( )<<endl;  
	p.setPoint(8.5,6.8);                             
	cout<<"p:"<<p<<endl; 
	system("pause");
	return 0;
}

#include <iostream>
using namespace std;
class Point
{
public:
	Point(double x=0,double y=0);					 //    
	void setPoint(double,double);                  //     
	double getX( ) const {return x;}              // x  
	double getY( ) const {return y;}              // y  
	friend ostream & operator<<(ostream &,const Point &);//     “<<”
protected:										 //     
	double x,y;
};


//Point     
Point::Point(double a,double b)	
{
	x=a;
	y=b;
}
//  x y    
void Point::setPoint(double a,double b)  
{
	x=a;
	y=b;
}

ostream & operator<<(ostream &output,const Point &p)
{
	output<<"["<<p.x<<","<<p.y<<"]"<<endl;
	return output;
}

class Circle:public Point   //circle Point       
{
public:
	Circle(double x=0,double y=0,double r=0);  //    
	void setRadius(double);                  //     
	double getRadius( ) const;               //     
	double area ( ) const;                   //     
	friend ostream &operator<<(ostream &,const Circle &);//     “<<”
protected:
	double radius;
};

//      ，           
Circle::Circle(double a,double b,double r):Point(a,b),radius(r){ }

//     
void Circle::setRadius(double r)
{
	radius=r;
}

//     
double Circle::getRadius( ) const
{
	return radius;
}

//     
double Circle::area( ) const
{
	return 3.14159*radius*radius;
}

//     “<<”，              
ostream &operator<<(ostream &output,const Circle &c)
{
	output<<"Center=["<<c.x<<", "<<c.y<<"], r="<<c.radius<<", area="<<c.area( )<<endl;
	return output;
}

int main( )
{
	Circle c(3.5,6.4,5.2);
	cout<<"original circle:
x="<<c.getX()<<", y="<<c.getY()<<", r="<<c.getRadius( ) <<", area="<<c.area( )<<endl;  
	c.setPoint(5,5);       
	cout<<"new circle:
"<<c;     
	system("pause");
	return 0;
}
 
#include <iostream>
using namespace std;
class Point
{
public:
	Point(double x=0,double y=0);					 //    
	void setPoint(double,double);                  //     
	double getX( ) const {return x;}              // x  
	double getY( ) const {return y;}              // y  
	friend ostream & operator<<(ostream &,const Point &);//     “<<”
protected:										 //     
	double x,y;
};


//Point     
Point::Point(double a,double b)	
{
	x=a;
	y=b;
}
//  x y    
void Point::setPoint(double a,double b)  
{
	x=a;
	y=b;
}

ostream & operator<<(ostream &output,const Point &p)
{
	output<<"["<<p.x<<","<<p.y<<"]"<<endl;
	return output;
}

class Circle:public Point   //circle Point       
{
public:
	Circle(double x=0,double y=0,double r=0);  //    
	void setRadius(double);                  //     
	double getRadius( ) const;               //     
	double area ( ) const;                   //     
	friend ostream &operator<<(ostream &,const Circle &);//     “<<”
protected:
	double radius;
};

//      ，           
Circle::Circle(double a,double b,double r):Point(a,b),radius(r){ }

//     
void Circle::setRadius(double r)
{
	radius=r;
}

//     
double Circle::getRadius( ) const
{
	return radius;
}

//     
double Circle::area( ) const
{
	return 3.14159*radius*radius;
}

//     “<<”，              
ostream &operator<<(ostream &output,const Circle &c)
{
	output<<"Center=["<<c.x<<", "<<c.y<<"], r="<<c.radius<<", area="<<c.area( )<<endl;
	return output;
}

class Cylinder:public Circle
{
public:
	Cylinder (double x=0,double y=0,double r=0,double h=0);//    
	void setHeight(double);                      //     
	double getHeight( ) const;                    //     
	double area( ) const;                         //      
	double volume( ) const;                       //      
	friend ostream& operator<<(ostream&,const Cylinder&);//     “<<”
protected:
	double height;                               //   
};

//      
Cylinder::Cylinder(double a,double b,double r,double h) :Circle(a,b,r),height(h){}

//     
void Cylinder::setHeight(double h)
{
	height=h;
}

//     
double Cylinder::getHeight( ) const 
{
	return height;
}

//       
double Cylinder::area( ) const
{ 
	return 2*Circle::area( )+2*3.14159*radius*height;
}

//      
double Cylinder::volume() const
{
	return Circle::area()*height;
}

//     “<<”
ostream &operator<<(ostream &output,const Cylinder& cy)
{
	output<<"Center=["<<cy.x<<","<<cy.y<<"], r="<<cy.radius<<", h="<<cy.height
		<<"
area="<<cy.area( )<<", volume="<<cy.volume( )<<endl;
	return output;
}

int main( )
{
	Cylinder cy1(3.5,6.4,5.2,10);
	cout<<"
original cylinder:
x="<<cy1.getX( )<<", y="<<cy1.getY( )<<", r="
		<<cy1.getRadius( )<<", h="<<cy1.getHeight( )<<"
area="<<cy1.area()
		<<",volume="<<cy1.volume()<<endl;
	cy1.setHeight(15);     
	cy1.setRadius(7.5);      
	cy1.setPoint(5,5);       
	cout<<"
new cylinder:
"<<cy1;        
	system("pause");
	return 0;
}
 


         ~！