//File:	circle.cpp
#include <string>
#include "circle.h"
using namespace std;

//These methods are accessible anywhere within the scope of
	//the circle class
	
const double PI=3.14159;

//Member functions -- DON'T HAVE THESE IN C
circle::circle()	//Constructor
{
	m_x=0.0;
	m_y=0.0;
	m_rad=1.0;
	m_name="Unit Circle";
}
	
//Overloaded constructor
circle::circle (double xcoord, double ycoord, double radius, string name)
{
	m_x=xcoord;
	m_y=ycoord;
	m_rad=radius;
	m_name=name;
}
	
circle::~circle()	//Destructor
{
}
	
//NOTE:	Constructors and destructors are called automatically.
//	You're not permitted to call them yourself.
//	Also, note that they have no return type.
	
//Accessor Methods
double circle::circumference() const	//The use of const here prevents
				//changing or updating the member data.
{
	return (m_rad*2.0*PI);
}
	
double circle::radius() const
{
	return m_rad;
}

string circle::name() const
{
	return m_name;
}

void circle::center (double & xcoord, double & ycoord) const
{
	xcoord=m_x;
	ycoord=m_y;
}