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1Object Oriented Programming

Version Version 00..11..22

Object Oriented Programming

Binnur Kurt

kurt@ce.itu.edu.tr Istanbul Technical UniversityIstanbul Technical University

Computer Engineering Department

Computer Engineering Department

2

About the Lecturer

About the Lecturer

BSc

TÜ, Computer Engineering Department, 1995

MSc

TÜ, Computer Engineering Department, 1997

Areas of Interest

Digital Image and Video Analysis and Processing

Real-Time Computer Vision Systems

Multimedia: Indexing and Retrieval

Software Engineering

OO Analysis and Design

3

Welcome to the Course

Welcome to the Course

Important Course Information

Course Hours

•10:00-13:00 Thursday

Course Web Page

•http://www.cs.itu.edu.tr/~kurt/courses/blg252e

Join to the group

•http://groups.yahoo.com/group/blg252e •blg252e@yahoogroups.com

E-mail

4

Grading Scheme

Grading Scheme

3 Homeworks (5% each)

2 Midterm Exams (20%,25%)

A final exam (40%)

You must follow the official Homework Guidelines

(http://www.ce.itu.edu.tr/lisans/kilavuz.html). Academic dishonesty including but not limited to cheating, plagiarism, collaboration is unacceptable and subject to disciplinary actions. Any student found guilty will have grade F. Assignments are due in class on the due date. Late assignments will generally not be accepted. Any exception must be approved. Approved late assignments are subject to a grade penalty. 5

References

References

The presentation is based on

Asst.Prof.Dr. Feza Buzlaca's Lecture Notes

6Object Oriented Programming

Tell me and I forget.

Show me and I remember.

Let me do and I understand.

- Chinese Proverb

There is no time for lab sessions

On the course web page you will find lab files for each week. You should do the lab sessions on your own.

Just follow the instructions on these documents.

7Object Oriented Programming

Purpose of the Course

Purpose of the Course

ŹTo introduce several programming paradigms including Object-

Oriented Programming, Generic Programming, Design

Patterns

ŹTo show how to use these programming schemes with the C++ programming language to build "good" programs.

8Object Oriented Programming

1. Introduction to Object Oriented Programming.

2. C++: A Better C.

3. Classes and Objects

4. Constructors and Destructors

5. Operator Overloading

6. Inheritance

7. Pointers to Objects

8. Polymorphism

9. Exceptions

Course Outline

Course Outline

9Object Oriented Programming

10. Templates

11.The Standard Template Library - STL

Course Outline

Course Outline

10Object Oriented Programming

How to Use the Icons

How to Use the Icons

Demonstration

ReferenceDiscussion

Exercise

11

INTRODUCTIONINTRODUCTION

1 12

Introduction1

Object Oriented Programming

Content

Content

ŹIntroduction to Software Engineering

ŹObject-Oriented Programming Paradigm

13

Introduction1

Object Oriented Programming

Software

Software

ŹComputer Software is the product that software engineers design and build.

ŹIt encompasses

-programsthat execute within a computer of any size and architecture, -documents that encompass hard-copy and virtual forms, -datathat combine numbers and text but also includes representations of pictorial, video and audio information. 14

Introduction1

Object Oriented Programming

History

History

ŹCommon problems:

- Why does it take so long? - Why are development costs so high? - Why can't find all faults before delivery? - Why can't we measure the development? 15

Introduction1

Object Oriented Programming

History

History

ŹSoftware Engineering: 1967, NATO Study Group,

Garmisch/GERMANY

Ź1968, NATO Software Engineering Conference:

Software Crisis

- Low quality - Not met deadlines and cost limits 16

Introduction1

Object Oriented Programming

After 35 years

After 35 years

ŹStill softwares are

-Late - Over budget - With residual faults

ŹMeans

- SW has own unique properties and problems - Crisis >>>>> Depression 17

Introduction1

Object Oriented Programming

Is SW An Engineering?

Is SW An Engineering?

ŹMay be?

ŹBridge - Operating System

- After collapse, redesign & rebuild - Inspect similar bridges - Perfectly engineered - Experience - Maintaining 18

Introduction1

Object Oriented Programming

MaintainabilityMaintainability

Flexibility

Flexibility

Testability

TestabilityPortability

Portability

Reusability

Reusability

Interoperability

Interoperability

Correctness

Correctness

Reliability

ReliabilityEfficiency

Efficiency

Integrity

IntegrityUsability

UsabilityPRODUCT TRANSITION

PRODUCT TRANSITIONPPRROODDUUCCTTRREEVVIISSIIOONNPPRROODDUUCCTTRREEVVIISSIIOONN

PRODUCT OPERATION

PRODUCT OPERATION

McCall Quality Triangle

McCall Quality Triangle

19

Introduction1

Object Oriented Programming

OperationOperationRevisionRevisionTransitionTransition 20

Introduction1

Object Oriented Programming

ŹCorrectness: The extent to which a program satisfies its specification and fulfills the customer's mission objectives

ŹReliability: The extent to which a program can be expected to perform its intended function with required precision

ŹEfficiency: The amount of computing resources and code required by a program to perform its function

ŹIntegrity: Extent to which access to software or data by unauthorized persons can be controlled ŹUsability: Effort required to learn, operate, prepare input and interpret output of a program ŹMaintainability: Effort required to locate and fix an error in aprogram

McCall Quality Triangle

McCall Quality Triangle

21

Introduction1

Object Oriented Programming

ŹFlexibility: Effort required to modify an operational program ŹTestability: Effort required to test a program to ensure that itperforms its intended function

ŹPortability: Effort required to transfer the program from one hardware and/or software system environment to another

ŹReusability: Extent to which a program can be reused in other applications ŹInteroperability: Effort required to couple one system to another

McCall Quality Triangle

McCall Quality Triangle

22

Introduction1

Object Oriented Programming

Customer-User-Developer

Customer-User-Developer

23

Introduction1

Object Oriented Programming

Development Team

Development Team

24

Introduction1

Object Oriented Programming

ŹRequirements Phase

ŹSpecification Phase

ŹDesign Phase

ŹImplementation Phase

ŹIntegration Phase

ŹMaintenance Phase

ŹRetirement Phase

Software Life Cycle

Software Life Cycle

25

Introduction1

Object Oriented Programming

ŹDefining constraints

- Functions - Due dates -Costs - Reliability -Size

ŹTypes

- Functional - Non-Functional

Requirements Phase

Requirements Phase

26

Introduction1

Object Oriented Programming

ŹDocumentation of requirements

- Inputs & Outputs - Formal - Understandable for user & developer - Usually functional requirements. (what to do) - Base for testing & maintenance

ŹThe contract between customer & developer ?

Specification Phase

Specification Phase

27

Introduction1

Object Oriented Programming

ŹDefining Internal structure (how to do)

ŹHas some levels (or types of docs)

- Architectural design - Detailed design

ŹImportant

- To backtrack the aims of decisions - To easily maintain

Design Phase

Design Phase

28

Introduction1

Object Oriented Programming

ŹSimply coding

ŹUnit tests

- For verification

Implementation Phase

Implementation Phase

29

Introduction1

Object Oriented Programming

ŹCombining modules

ŹSystem tests

- For validation

ŹQuality tests

Integration Phase

quotesdbs_dbs20.pdfusesText_26
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