January 2021
Intermediate to advanced
912 pages
19h 47m
English
Content preview from C++ All-in-One For Dummies, 4th Edition
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Chapter 4
Building Directories and Contents
IN THIS CHAPTER
Creating and deleting directories
Getting the contents of a directory
Copying and moving, and why they are related
Moving and renaming files and why they are similar
Native C++ versions before version 17 provide no functions for creating directories and getting the contents of a directory. (C++ 17 and above provides access to the filesystem library, but it isn’t implemented in most compilers yet.)You need to know two points about this situation:
- There really is a good reason for this lack. C++ is a general-purpose language. Issues that deal with directories are specific to individual operating systems. Thus it doesn’t make sense to include such features in C++.
- Some brave rebels have added some functions — and these functions exist in most C++ implementations. These additions are important; otherwise, you’d have to call in to the operating system to create or modify a directory.
C++ has a holdover from the C programming language in the header file stdio.h that includes functions for renaming and removing files and directories. ...
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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.