Link to home
Start Free TrialLog in
Avatar of delltrotter
delltrotter

asked on

inheritance in c++

/*******************************************************
 * These are the .h files for the question given by the textbook authors to
 * exercise 9.13 of Deitel & Deitel.  
 *******************************************************/

// P9_13.H
#ifndef P9_13_H
#define P9_13_H
#include <iostream.h>
 
class Point {
   friend ostream &operator<<(ostream&, const Point&);
public:
   Point(double = 0, double = 0);
   void setPoint(double, double);
   void print(void) const;
   double getX(void) const { return x; }
   double getY(void) const { return y; }
private:
   double x, y;
};
 
#endif
//*******************************************************
// P9_13Q.H
#ifndef P9_13Q_H
#define P9_13Q_H
#include "p9_13.h"
 
class Quadrilateral {
   friend ostream &operator<<(ostream&, Quadrilateral&);
public:
   Quadrilateral(double = 0, double = 0, double = 0, double = 0, double = 0,
                 double = 0, double = 0, double = 0);
   void print(void) const;
protected:
   Point p1;
   Point p2;
   Point p3;
   Point p4;
};
 
#endif
//*******************************************************
// P9_13T.H
#ifndef P9_13T_H
#define P9_13T_H
#include "p9_13q.h"
 
class Trapazoid : public Quadrilateral {
   friend ostream& operator<<(ostream&, Trapazoid&);
public:
   Trapazoid(double = 0, double = 0, double = 0, double = 0, double = 0,
             double = 0, double = 0, double = 0, double = 0);
   void print(void) const;
   void setHeight(double h) { height = h; }
   double getHeight(void) const { return height; }
private:
   double height;
};
 
#endif
//********************************************************
// P9_13PA_H
#ifndef P9_13PA_H
#define P9_13PA_H
#include "p9_13q.h"
 
class Parallelogram : public Quadrilateral {
   friend ostream& operator<<(ostream&, Parallelogram&);
public:
   Parallelogram(double = 0, double = 0, double = 0, double = 0,
                 double = 0, double = 0, double = 0, double = 0);
   void print(void) const;
private:
   // no private data members
};
 
#endif
//********************************************************
// P9_13R.H
#ifndef P9_13R_H
#define P9_13R_H
#include "p9_13pa.h"
 
class Rectangle : public Parallelogram {
   friend ostream& operator<<(ostream&, Rectangle&);
public:
   Rectangle(double = 0, double = 0, double = 0, double = 0,
             double = 0, double = 0, double = 0, double = 0);
   void print(void) const;
private:
   // no private data members
};
 
#endif
//********************************************************
// P9_13S.H
#ifndef P9_13S_H
#define P9_13S_H
#include "p9_13pa.h"
 
class Square : public Parallelogram {
   friend ostream& operator<<(ostream&, Square&);
public:
   Square(double = 0, double = 0, double = 0, double = 0,
          double = 0, double = 0, double = 0, double = 0);
   void print(void) const { Parallelogram::print(); }
private:
   // no private data members
};
 
#endif


Avatar of delltrotter
delltrotter

ASKER

i am new to c++ and have just started classes and inheritance
i am using borland c++ builder and i was wondering does anyone know how to set up a project properly as when i tried to run the abive program it was unable to link any of the headerfiles

Is this an assignment by chance?
yes but i have it done i only want to know how to run it
ASKER CERTIFIED SOLUTION
Avatar of viktornet
viktornet
Flag of United States of America image

Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
Unfortunately, I am away from home now so I don't have builder with me.  But you want to create a "win32 console project" for this.  A "win32 console program" is like a DOS program or like a program that standard C++ was designed to run as.  It has a standard output device (the screen) and a standard input device (the keyboard) that work like standard C++ requires.  A windows GUI program (the other type of program that can be created by builder) does not have these standard devices and thus will not compile stnadard C++ code.

If I remember correctly the way to create a win32 console project is a little missleading.  I think you with want to selected like a windows GUI icon and then under there select a win32 console icon.


I hope that helps.
I just finished the question .Thanks to all who replied and
"A happy new year to all".