1. Programmer Defined Types and Classes

2. Review—Fundamental and Common C++ Types
Each type has two characteristics associated with it:
allowable values
allowable operations
ex, int and bool
Fundermental types: int, float, char, bool
String type
Aggregate type: arrays

3. Class and structure overview
A class is a data type whose variables are objects
A class definition includes
A description of the kinds of values the variable can hold
A description of the member functions
Examples: pre_defined class: int, char
When you define a class, you are defining a new type
structure
A structure can be viewed as an object
Contains no member functions
Contains multiple values of possibly different types

4. Struct: the allowable values
The Certificate of Deposit structure can be defined as struct CDAccount { double balance; double interest_rate; int term; //months to maturity };
Remember this semicolon!

5. More programmer defined type example
Complex number
struct complex_number {
float r;
float I; };
COMPLEX.H
COMPLEX.CPP
COMPLEX_APP.CPP

6. More example
Example: 
complex_op.h,
complex_op.cpp,
complex_op_app.cpp