September 2004
Beginner
528 pages
10h 26m
English
Content preview from C++ Without Fear: A Beginner’s Guide That Makes You Feel Smart
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8 Files: Electronic Storage
So far, the programs in this book have performed calculations and printed results. That’s a good start, but it only takes you so far in the real world.
Most practical applications (reservation systems, database systems, spreadsheets, and even games) store and retrieve persistent information. This is data that hangs around after the program ends, and even after the computer is turned off.
In contrast, main memory (“RAM”) is certainly a kind of storage, but it’s not persistent. As soon as the computer loses power, all the data in memory is lost forever (which is why you kick yourself if you don’t save to disk in Word often enough). But even if main memory were more permanent—even if it didn’t zero out when the computer ...
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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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