CIS 1440 Program 2 Due 07/13/05
More Object Oriented Programming 23:59:59
Page 1
You must create three files for this project, a .h file for the class definitions, a .cpp file for
the bodies of the class functions, and a .cpp file containing the main program and all
required global functions (if any). These files should be named “MoreOOP.h”
“MoreOOP.cpp” and “main.cpp”.
In your .h file, you will create two classes, a scaled point and a scaled rectangle. All data
items for both classes will be protected, all functions for both classes will be public.
The scaled point will have two members, the X and Y coordinates, which will be
integers, and two static members, the Numerator and Denominator, which will be
integers. The Numerator and denominator must be initialized to 1, NOT in the
constructor!
The Scaled Point class will have the following class functions:
GetX – Get with scaling – Returns (integer) (X*Numerator)/Denominator
GetY – Same as GetX, but for Y coordinate.
SetX – Has one integer argument and sets X=(Arg*Denominator)/Numerator
SetY – Same, but for Y coordinate.
It will also have the following static functions:
int Scale(int Value,int Mul,int Div) – Computes (Value*Mul)/Div
int Scale(int Value) – Computes (Value*Numerator)/Denominator
void SetScale(int NewNumerator, int NewDenominator) – Sets numerator & denominator
int GetNumerator(void) – Self explanatory.
int GetDenominator(void) – Self explanatory.
The scaled point class will have overloads for the assignment operator and for the +=
operator. The += overload will add an integer (the same integer) to both coordinates. It
will have a copy constructor, a default constructor and a constructor that takes two
integer arguments, the new X and Y coordinates. No constructor will change the value of
any static element. The scaled point class will have a default destructor which does
nothing. The scaled point class will have one friend, the scaled rectangle class.
The scaled rectangle class will have two data items, both of which will be scaled points.
The scaled points will give the upper left and lower right corners of the rectangle.
The scaled rectangle class will have four constructors, the default, a copy constructor, and
two specialized constructors, one that takes two scaled points (upper left and lower right)
and one that takes four integers (left, top, right, and bottom.) It will overload the
assignment and += operators. The += operator will take an integer argument and add that
integer (using +=) to both points. There will be accessor functions that return the upper-
left and lower-right points. There will be mutator functions that supply new values for the
two points. There will be two mutator functions for each point, one that takes a scaled
point for an argument, and one that takes two integers.
