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 2
Writing with Output Streams
IN THIS CHAPTER
Using the insertion operator
Formatting your output generally and with flags
Specifying precision and setting field widths
Ensuring data safety with locked streams
Years ago, it was possible to have a personal computer with 3,000 bytes of memory. (Yes, that’s three thousand bytes, not 3MB.) As an option, this computer came with a floppy disk drive that sat outside it. It didn’t have a hard drive. Therefore, if you didn’t have a hard drive but you wanted to use an application, you had to load the application from a floppy, type its name, and press Enter!
Nowadays, the notion of a computer without permanent storage is unthinkable. Not only do your applications appear in permanent storage in the form of files, but your applications also create files to store in permanent storage. In this chapter, you see the different ways you can write to a file in any permanent storage location: hard drive, removable device, network, online, or wherever else permanent storage is found.
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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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.