#include <iostream> // CircleWithPrivateDataFields.h is defined in Listing 9.9 #include "CircleWithPrivateDataFields.h" using namespace std; void printCircle(Circle c) { cout << "The area of the circle of " << c.getRadius() << " is " << c.getArea() << endl; } int main() { Circle myCircle(5.0); printCircle(myCircle); return 0; }