shared global variables in C

Posted by Claudiu on Stack Overflow See other posts from Stack Overflow or by Claudiu
Published on 2010-06-09T23:12:57Z Indexed on 2010/06/09 23:22 UTC
Read the original article Hit count: 269

Filed under:

How can I create global variables that are shared in C? If I put it in a header file, then the linker complains that the variables are already defined. Is the only way to declare the variable in one of my C files and to manually put in externs at the top of all the other C files that want to use it? That sounds not ideal.

Related posts about variables

System Expandable-String Environment Variables Can’t Reference User Environment Variables

as seen on Super User - Search for 'Super User'
Hi, I’ve run into a bit of a situation with Windows environment variables. I’ve narrowed it down to what may or may not makes sense and/or possibly be by design. It seems that expandable-string environment variables of the local machine cannot reference environment variables of the current user. For… >>> More
Local variables and instance variables

as seen on Stack Overflow - Search for 'Stack Overflow'
Why is it that instance variables are initialised to default values while local variables aren't? >>> More
Arguments, local variables, and global variables coding convention in Python

as seen on Stack Overflow - Search for 'Stack Overflow'
In python, there is no way to differentiate between arguments, local variables, and global variables. The easy way to do so might be have some coding convention such as Global variables start with _ and capital letter arguments end with with _ _Gvariable = 10 def hello(x_, y_): z = x_ + y_ Is… >>> More
Arguments, local variables, and global variables in Python

as seen on Stack Overflow - Search for 'Stack Overflow'
In python, there is no way to differentiate between arguments, local variables, and global variables. The easy way to do so might be have some coding convention such as Global variables start with _ and capital letter arguments end with with _ _Global variable = 10 def hello(x_, y_): z =… >>> More
Difference between putting variables in header vs putting variables in source

as seen on Stack Overflow - Search for 'Stack Overflow'
Say I declare a header file with a variable: int count; Then in the source file, I want to use count. Do I have to declare it as: extern int count Or can I just use it in my source file? All assuming that I have #include "someheader.h". Or should I just declare it in the source file? What is… >>> More

Developer IT

shared global variables in C - Developer IT

shared global variables in C

c

variables

linker

global-variables

variable-scope

Related posts about c

Related posts about variables

System Expandable-String Environment Variables Can’t Reference User Environment Variables

Local variables and instance variables

Arguments, local variables, and global variables coding convention in Python

Arguments, local variables, and global variables in Python

Difference between putting variables in header vs putting variables in source

Categories cloud