ftp.nice.ch/peanuts/GeneralData/Documents/books/AlexNeXTSTEPSource.tar.gz#/NSProgramming/Chapter3_OOD/ShapeArea

AbstractShape.h
[View AbstractShape.h] 

AbstractShape.m
[View AbstractShape.m] 

Makefile
 

Rectangle.h
[View Rectangle.h] 

Rectangle.m
[View Rectangle.m] 

ShapeArea_main.m
[View ShapeArea_main.m] 

Square.h
[View Square.h] 

Square.m
[View Square.m] 

These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.