Encapsulation

Encapsulation encloses data and functionality into a single unit (called a class):

In C++, data and functionality are separated into two separate protections: public and private.

Public vs Private

The protection level determines the access that "client code" has to the member data or functionality:

• Public members can be accesses by client code.
• Private members cannot be accessed by client code (only used within the class itself).

Encapsulation # 2

In C++, the interface (.h file) to the class is defined separately from the implementation (.cpp file).