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m_r = r;

}

bool Circle::scale(double factor)

{

if (factor

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cout

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Include Guard (everything goes in between; use for all header files):

How to work around double declarations of a class:

// Point.h

// POINT_INCLUDED now cannot be used as a variable name in any other part of the project

ifndef POINT_INCLUDED

define POINT_INCLUDED

class Point

{...

};

#endif // POINT_INCLUDED

==========================

// Circle.h

ifndef CIRCLE_INCLUDED

define CIRCLE_INCLUDED

#include Point.h

class Circle

{

...private:

Point m_center;

double m_radius;

};

#endif // CIRCLE_INCLUDED

========================

// Course.h

#ifndef COURSE_INCLUDED

#define COURSE_INCLUDED

Class Student;

// Acceptable as program only declares a pointer to this object (all pointers are same size.)

class Course

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{

...

Student* m_roster[1000];};

#endif // COURSE_INCLUDED// Course.h

====================================

// Student.h

#ifndef STUDENT_INCLUDED#define STUDENT_INCLUDED

Class Course;

// Acceptable as program only declares a pointer to this object (all pointers are same size.)

class Student

{...

Course* m_studyList[10];

};

#endif // STUDENT_INCLUDED