June 2014
Beginner
480 pages
9h 12m
English
Content preview from C++ For Dummies, 7th Edition
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Chapter 15
“Why Do You Build Me Up, Just toTear Me Down, Baby?”
In This Chapter
Creating and destroying objects
Declaring constructors and destructors
Invoking constructors and destructors
Objects in programs are built and scrapped just like objects in the real world. If the class is to be responsible for its well-being, it must have some control over this process. As luck would have it (I suppose some planning was involved as well), C++ provides just the right mechanism. But first, a discussion of what it means to create an object.
Creating Objects
Some people get a little sloppy in using the terms class and object. What’s the difference? What’s the relationship?
I can create a class Dog that describes the relevant properties of man’s best friend. At my house, we have two dogs. Thus, my single class Dog has two instances, Jack and Scruffy. (Well, I think there are two instances — I haven’t seen Scruffy in a few days.)
A class describes a type of thing. An object is one of those things. An object is an instance of a class. There is only one class Dog, no matter how many dogs I have. ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.