February 2020
Beginner to intermediate
616 pages
15h 16m
English
Content preview from Practical C Programming
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How to do it…
The steps for taking a number from the user using a faster input approach are as follows:
- The user is asked to enter a number.
- The number that will be entered by the user is accepted by the getchar_unlocked() function. Only one digit at a time is accepted by this function.
- The value entered by the user is first checked to ensure that it is a digit only. If it is not, the user is asked to re-enter the value.
- If the value entered by the user is a digit, its ASCII value is saved in the variable. This is because getchar_unlocked() assigns the ASCII value of the entered value to the variable.
- From the ASCII of the entered value, 48 is subtracted to convert it into the actual digit that the user has entered.
- If the digit is the first ...
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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.
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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.