Download C++ Timesaving Techniques For Dummies (For Dummies by Matthew Telles PDF

By Matthew Telles

So much books conceal the syntax of the language. This publication covers a few attention-grabbing the way to use it successfully. specifically, i used to be interested in this publication for its instance of a category manufacturing unit. now not an issue lined in such a lot books.

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This approach might be used for error handling, or to change the way a given class handles printing, or just about anything else. In the next section, I show you how you can customize a class, using virtual functions to change the behavior of a base-class method at run-time. 20 Technique 3: Customizing a Class with Virtual Functions Customizing a Class with Polymorphism In order to understand how base classes can be customized using the polymorphic ability offered by virtual functions, let’s look at a simple example of customizing a base class in C++.

The compiler does not care what you call your file. Although the constructor for a class is all wonderful and good, it does bring up an interesting point. What if something goes wrong in the construction process and you need to signal the user? You have two ways to approach this situation; both have their positives and negatives: Type the code from Listing 4-4 into your file. Or better yet, copy the code from the source file on this book’s companion Web site. AddProperty( “Address”, “1000 Main St” ); } 3.

Creating the Header File In order to be able to conditionally include the pieces of the code we wish to use in our application, we will create a single header file that utilizes pre-compiler defined values to determine the files that are needed. The following steps show you how to create such a file: 40 1. 2. Technique 6: Handling Multiple Operating Systems In the code editor of your choice, create a new file to hold the code for the source file of the technique. 3. Save the source code as a file in the code editor and close the code-editor application.

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