July 2015
Intermediate to advanced
380 pages
10h 15m
English
book
Learn C the Hard Way: Practical Exercises on the Computational Subjects You Keep Avoiding (Like C)
by Zed A. Shaw
Content preview from Learn C the Hard Way: Practical Exercises on the Computational Subjects You Keep Avoiding (Like C)Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.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.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.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.
Exercise 12. Sizes and Arrays
In the last exercise, you did math but with, a '\0' (nul) character. This may seem odd if you’re coming from other languages, since they try to treat strings and byte arrays as different beasts. C treats strings as just arrays of bytes, and it’s only the different printing functions that recognize a difference.
Before I can really explain the significance of this, I have to introduce a couple more concepts: sizeof and arrays. Here’s the code we’ll be talking about:
ex12.c
1 #include <stdio.h> 2 3 int main(int argc, char *argv[]) 4 { 5 int areas[] = { 10, 12, 13, 14, 20 }; 6 char name[] = "Zed"; 7 char full_name[] = { 8 'Z', 'e', 'd', 9 ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.