In Objective-C, how do you declare/use a global variable?

Question

I have been researching this problem for a long time, and I can't seem to find the answer to this question. I am fairly new to iPhone programming, so sorry if this is a stupid question. If anyone has just specific code to post showing how this can be done, that will be very helpful.

Answer 1

Objective-C is a superset of C, so just do it the C way:

int globalX = 100;

And header file:

extern int globalX;

Answer 2

You do it exactly the way you would in C. Here's a simple example:

int myGlobal = 3;