October 2020
Beginner to intermediate
464 pages
8h 17m
English
Content preview from C Programming For Dummies, 2nd Edition
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Chapter 5
Values and Simple Math
IN THIS CHAPTER
Working with values
Using printf() to display values
Formatting floating-point output
Letting the program do the math
Dealing with integer and float math
Back in the old days, most people thought of computers in terms of math. Computers calculated rocket trajectories, conducted the census, and screwed up phone bills. They were scary, technological things, and the people who programmed computers were downright geniuses.
Ha! Fooled everyone.
Programmers merely write the equation and punch in a few numbers, and then the computer does the math. That’s the genius part. Punching in the wrong numbers is the nongenius part. Before you can get there, you have to understand a bit about values and variables and how the C programming language deals with them.
A Venue for Various Values
Computers deal with both numbers and text. Text comes in the form of individual characters or a parade of characters all tied together in a string. Numbers are ...
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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.