April 2005
Intermediate to advanced
344 pages
11h 59m
English
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Local and Global Variables
Variables
exist only within the blocks in which
they are defined. A block is a collection of
statements enclosed by special statements such as loops and function
calls. For example, if you define a variable within a particular
function call, it will not exist when the function call returns. At
times, it is necessary to define variables that should exist
globally; in such cases you should use global_var
to define them:
global_var myglobalvariable;
Variables are local by default. You can also use
local_var to state this explicitly.
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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.
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.