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C++ Workshop - OO Analysis, Design, & Porgramming (Ch. 6 & Ch. 11)

Jeromy Walsh · 2008-05-20T15:14:01

Welcome to the GDNet C++ Workshop – Ch. 6 & Ch. 11For a complete introduction to this workshop, please look here. Workshop Overview This workshop is designed to aid people in their journey to learn beginning C++. This workshop is targeted at highly motivated individuals who are interested in learning C++ or who have attempted to learn C++ in the past, but found that without sufficient support and mentoring they were unable to connect all the pieces of this highly complex but powerful programming language. This is a 'guided' self-teaching C++ workshop. Each student is responsible for taking the time to read the material and learn the information. The community and tutors that arise out of this workshop are here for making the learning process run more smoothly, but are not obligated to baby-sit a person's progress. Because everyone will be working from the same textbook (Teach Yourself C++ in 21 days 5th Ed.), students may find it easier to get answers to the specific questions they might have. There is no minimum age requirement, and there is no previous programming experience required. Additionally, this workshop does not attempt to defend C++ as a language, nor does it attempt to demonstrate that C++ is either more or less useful then other programming languages for any particular purpose. People who intend to start a discussion about the differences between C++ and ANY other languages (except as are relevant to a particular discussion), are encouraged to do so elsewhere. This workshop is for educational, not philosophical discussions. Quizzes & Exercises Each week will have quizzes and exercises posted in the weekly threads. Please try and answer them by yourself. As well, please DO NOT post the answers to Quizzes and Exercises within this thread. Once it becomes acceptable to post the answers to quizzes and exercises, an additional thread will be created each week specifically for the purpose of posting quiz answers. If you try with reasonable effort but are unable to answer the questions or complete the exercises, feel free to post a clarification question here on the thread. Tutors, myself, or others will do the best we can to point you in the right direction for finding the answer. Chapter 6 – Understanding Object Oriented Programming & Chapter 11 - Object Oriented Analysis & DesignIntroduction At long last we have arrived at the meat of C++. There will be much after this chapter, such as chapter 7 (More on Program Flow) which can still be inherited from C, but the majority of chapters after this point will either be wholly C++ in semantics, or will at least provide an alternate implementation for use specifically with C++. Based on the feedback provided in our forums I've decided that during the remaining weeks of the course there will be 2 or 3 more times when it is appropriate to combine two chapters into a single week. This is such a week. Although Chapter 6 is perhaps the most important chapter in the book, chapter 11 is so closely related that it can be viewed as a continuation of the subject. Where chapter 6 introduces the reader to Classes and the syntax to use them, chapter 11 goes beyond that into thinking in terms of objects, and shows the reader how to design their applications with objects in mind, rather than procedures. Because we will be doing two chapters this week I expect there will be many more questions. Please feel free to post them here, as it's very important that you grasp the concepts. Without the tutors and peers here to help I'd be concerned about trying to do these two chapters at once, but with our help, they should both go relatively smoothly. Please remember to use OPINION and WARNING tags whenever applicable. As well, feel free to post your own insights, and review questions or exercises beginning Wednesday or Thursday. Outline of the Reading - Chapter 6 Is C++ Object Oriented? Creating New Types Introducing Classes and Members Accessing Class Members Private vs. Public Access Implementing Class Methods Adding Constructors & Destructors Including const Member Functions Interface vs. Implementation Where to Put Class Declarations and Method Definitions Inline Implementations Classes with Other Classes as Member Data Exploring Structures Outline of the Reading - Chapter 11 Building Models Software Design: The Modeling Language Software Design: The Process Step 1: The Conceptualization Phase: Starting with The Vision Step 2: The Analysis Phase: Gather Requirements Step 3: The Design Phase Step 4-6: Implementation, Testing, Rollout? Iterations Good Luck! [Edited by - jwalsh on May 30, 2007 12:09:18 PM]

CPP Workshop Workshops

Started by JWalsh July 03, 2006 11:00 AM

75 comments, last by Dbproguy 16 years, 2 months ago

Deyja

920

August 06, 2006 08:37 AM

Quote: when i do this (i.e. include the declaration file header into both main and the implementation file), i get a linker error:

[Linker error] undefined reference to `Soldier::Soldier()'

I already addressed this one. Assuming this is the only error you get; it means you didn't define your constructor, you just declared it.

http://jemgine.omnisu.com

jflanglois

1,020

August 06, 2006 03:13 PM

Quote: Original post by Deyja
I already addressed this one. Assuming this is the only error you get; it means you didn't define your constructor, you just declared it.

I think it more likely that he did define it, but he is compiling and linking only main.cpp, where the definition is in another file.

Deyja

920

August 06, 2006 03:50 PM

Ah, but then he wouldn't have gotten those other errors in the first place, see?

http://jemgine.omnisu.com

jflanglois

1,020

August 06, 2006 04:07 PM

Quote: Original post by Deyja
Ah, but then he wouldn't have gotten those other errors in the first place, see?

Hmm, yeah. You may be right.

kingIZZZY

122

August 06, 2006 10:22 PM

I have 3 files all in same project;

ClassSoldier.hpp = contains my class' declaration.
Soldier.cpp = contains my class' definition (implementation), which #includes ClassSoldier.hpp. (and yes, it has the constructors definition)
main.cpp = main, which #includes ClassSoldier.hpp

and i get link error
[Linker error] undefined reference to `Soldier::Soldier()'

according to jflanglois:

Quote: It's the job of the linker to then combine the compiled object code from both main.cpp and Soldier.cpp into a single executable. This is usually hidden from you when you use an IDE, which implicitly links together every implementation file that is in your project.

Deyja

920

August 07, 2006 05:24 AM

Quote: (and yes, it has the constructors definition)

The definition; or just the declaration? Post the code; all of it.

http://jemgine.omnisu.com

Myotis

122

August 07, 2006 10:48 AM

Where did the C++ Workshop - Week 5 (Ch. 6 & 11) - Quizzes and Exercises thread go ? I remember seeing it earlier this week...

eektor

182

August 07, 2006 12:58 PM

I noticed the same thing. Go to the top and where it says show topics for last 10 days and change that to last 30 days and you will see the Quizzes and Exercise thread.

kingIZZZY

122

August 07, 2006 08:32 PM

jflanglois, deyja;

ok i tracked the problem; i declared a default constructor (and 2 more overloaded constructors) but implemented only my other overloaded constructors, not the dafeult one i declared. n00bish of me.

thanx for ur help

Myotis

122

August 08, 2006 09:41 PM

Pardon me but...where are the answers of the C++ Workshop - Week 5 (Ch. 6 & Ch. 11) - Quizzes and Exercises ?

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C++ Workshop - OO Analysis, Design, & Porgramming (Ch. 6 & Ch. 11)

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C++ Workshop - OO Analysis, Design, & Porgramming (Ch. 6 & Ch. 11)

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