May 2014
Beginner
960 pages
26h 46m
English
Content preview from Ivor Horton's Beginning Visual C++ 2013
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Chapter 2Data, Variables, and Calculations
- C++ program structure
- Namespaces
- Variables in C++
- Defining variables and constants
- Basic input from the keyboard and output to the screen
- Performing arithmetic calculations
- Casting operands
- Variable scope
- What the auto keyword does
- How to discover the type of an expression
You can find the wrox.com code downloads for this chapter on the Download Code tab at www.wrox.com/go/beginningvisualc. The code is in the Chapter 2 download and files are individually named according to the names throughout the chapter.
THE STRUCTURE OF A C++ PROGRAM
Console applications are programs that read data from the command line and output results to the command line. All the examples that you’ll write to understand how the C++ language works will be console programs. This avoids having to dig into the complexities of creating and managing Windows applications before you have enough knowledge of how they work. You will be able to focus entirely on C++. After you have mastered that, you’ll be ready to deal with creating and managing Windows applications and the sacks of code that it involves. I’ll start by explaining how console programs are structured.
A C++ program consists of one or more functions. A function is a self-contained block of code with a unique name that you use to identify the function when you want to execute it. Chapter 1 includes an example of a Win32 console ...
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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.