April 1994
Beginner
432 pages
6h 37m
English
Content preview from Absolute Beginner’s Guide to C, 2nd Edition
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29. Is There Another Way to Save Files?
Use Random Files
This chapter shows you how to skip around in a file, reading and writing data as you go. The preceding chapter introduced methods you can use to write, read, or append data to a file. The problem is that once you open a sequential file for reading, you can only read it.
There might be times when you want to read a customer structure from disk and change the customer’s balance. You certainly wouldn’t want to have to create a new file just so you could write that one change. Instead, you would want to read the customer ...
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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.