1. Programming Design
In this section, you will learn about programming
design and learn to identify and discuss the three
most common designs.

2. Programming design is the approach taken
to writing code. It takes into consideration:
 the problem being addressed.
 the goals of the project.
 the programming language that will
be used.
Some programming languages are ideally
suited for one type of programming design.
However, many programming languages will
support more than one type of programming
design.
Programming Design

3. It is important to decide upon a programming design
before developing a software solution. Starting out
with a design benefits a project because:
 it communicates decisions about the
programming approach to all project team
members.
 it helps to ensure that different parts of the code
developed by different programmers will integrate
properly.
 it helps to ensure that code will be easy to read and
maintain.
 it saves time, money, and effort.
Ready, Set, GO! Programming Design

4. There are three common types of programming
design. Each has advantages and disadvantages
that make it ideally suited for one type of
problem, yet not for another.
The three common types of programming design
include the following:
 Top-down
 Structured
 Object-oriented
Three Types of Programming Design

5. Some of the programming
languages used with a top-
down approach include
the following:
 Ada
 BASIC
 C
 C++
 COBOL
 Java

6. Using Top-Down
Programming Design

7. Advantages of Top-Down
Programming Design

8. Disadvantages of Top-Down
Programming Design

9. Structured Programming
Design

10. Example:
1. Get carrot
2. Get carrot
peeler
3. Peel carrot

14. Characteristics of Object-Oriented
Programming Design
Object-oriented programming is often the best programming
design approach, especially in situations where the
programmer may need to make minor changes to the code at
a future time, and when the programmer wishes to reuse the
code in other programs.
An object-oriented programming design:
 breaks the solution into independent objects.
 uses objects that send data to other objects.
 supports a modular design that encourages the reuse of code.
 makes use of abstraction, which is the use of an object for a
very specific purpose.

17. Images from this presentation are used with permission from
Microsoft.