Introduction to OOP: Chapter 3: Classes and Methods:
Interface and Implementation
In some OOP languages,
the distinction between interface and implementation is manifest on two
Within a class, separation between interface and implementation part
Example, in C++, public and private fields.
Interface descriptions and implementation bodies appearing in separate
files (or separate area of same file).
Example, in C++, *.h files and *.cpp files.
Intro OOP, Chapter 3, Slide 9