October 2013
Intermediate to advanced
312 pages
8h 19m
English
Content preview from Advanced Topics in C: Core Concepts in Data Structures
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CHAPTER 3
Pointers
In this chapter, we will explain the following:
- What a pointer is
- How to declare pointer variables
- How to dereference a pointer
- How a function can change the value of a variable in a “calling” function
- Some issues involved in passing an array as an argument to a function
- How to work with character pointers
- The meaning of pointer arithmetic
- How to use pointers to structures
- How to use pointers to functions to write general-purpose routines
- What are void pointers and how to use them
3.1 Defining Pointers
In C, arguments to functions are passed “by value.” Suppose the function test is called with the variable num as an argument. ...
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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.