May 2012
Intermediate to advanced
679 pages
16h 56m
English
Content preview from Object Oriented Programming with C++, Second EditionBecome 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,
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3.3 LOCAL VERSUS GLOBAL VARIABLES
So far we have seen that the information is passed to a function through parameters. It is possible to pass information to functions other than parameters through global variables. The variables declared outside (and above) the function becomes a global variables for such function.
Word global means universal, available everywhere. In programming, it means such variables are available for use in function main() or any other user-defined functions. A variable declared inside any function is called a local variable. Its scope is for that function itself. It does not have existence outside that function. Program 3.3 will help to understand these concepts.
Problem: Write a program to read the marks obtained and calculate ...
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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.
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.