1. CSE 2341 Object Oriented Programming with C++ Note Set #4

2. Procedural/structures vs. OOP First Class
Quick Look
Procedural/structures vs. OOP
First Class

3. Procedural vs OOP Procedural Object Oriented Programming (OOP)
focused on procedures that take place in a program
data is secondary to functionality
Object Oriented Programming (OOP)
concerned with understanding the objects involved in a problem and how they interact.

4. Problems with Procedural Programming
excessive global data
larger solutions are complex and convoluted
can be very difficult to understand, modify, and extend

5. OOP
focuses on the objects and their interaction based on the problem domain
packages together the data and methods to operate on that data
sometimes called attributes and behavior

6. Concept Point Create a Point class that represents a point in 2D space
int x
int y
getX()
setX(newX)
interface
distance(anotherPoint)
Private Data and Methods to operate on that data

7. Objects Range of possibilities is limited by programmers imagination
Usually very specific or very general
general purpose: Vector class, some datatype not part of language such as date, GUI objects
specific purpose: objects created for a specific application domain such as inventory

8. Benefits of OOP Data abstraction Compatibility Flexibility
details of classes only visible to its methods
Compatibility
easier to combine software components
Flexibility
classes provide units for task allocation

9. Benefits of OOP Reuse Extensibility Maintenance
easier to develop reusable software
Extensibility
inheritance allows new classes to be built from old ones
Maintenance
The natural modularity of the class structures makes it easier to contain the effects of change

10. Fini ?