October 2020
Beginner to intermediate
464 pages
8h 17m
English
Content preview from C Programming For Dummies, 2nd Edition
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Chapter 21
It’s About Time
IN THIS CHAPTER
Programming time functions
Understanding the Unix epoch
Retrieving the current time
Displaying the date and time
Pausing program execution
It’s time to program! Or, to put it another way, it’s time to program time. The C library is bursting with various time-oriented functions, allowing you to not only report the current time but also display dates and times. You can even suspend a program’s execution — on purpose — providing you know the proper functions.
What Time Is It?
Does anyone have the time? Seriously, does anyone really know what time it is — or was?
Electronic devices have clocks, but this feature doesn’t make them the best timekeepers. In fact, most gizmos today constantly update their internal clocks by using an Internet time server. Otherwise, the clock on your computer, cell phone, or tablet would never be accurate.
When you program the time in C, you’re relying upon the device you’re using to accurately report the date and ...
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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.