// File: ex5-3.cpp - static data member

#include <iostream>
using namespace std;

// function prototype
void funk();

class Circle
{
private:
	double radius;
	static unsigned numCircles;
public:
	Circle (double r = 1.0) : radius(r) { numCircles++;}
	Circle (const Circle& C) : radius(C.radius) { numCircles++;}
	~Circle () {numCircles--;}
	void printCircleCount();
};

unsigned Circle::numCircles = 0;     // static member definition

void Circle::printCircleCount()
{
	cout << "Number of Circles = " << numCircles << endl;
}


int main()
{
	Circle c1(5.);
	c1.printCircleCount();
	Circle c2;
	c2.printCircleCount();
	c1.printCircleCount();
	{
		Circle c3(1.5);
		c3.printCircleCount();
	}
	c1.printCircleCount();
	Circle c4(c1);
	c1.printCircleCount();

	funk();
	c1.printCircleCount();
}

void funk()
{
	Circle tempLocal;
	tempLocal.printCircleCount();
}