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OS X - Development and Darwin Discussion and questions about development for Mac OS X.

Objective-C .. I just don't get it

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Member Since: May 15, 2009
Posts: 1
pendal is on a distinguished road

pendal is offline
I am having a really hard time moving to objective-c /cocoa in terms of the .h and .m files.

I understand what they are, but I don't get what goes where.

My biggest issues right now is

how can I internalize variables for use inside a specific function
PHP Code:
var1 1;

var2 5;

var3 var1 var2;

if i try to build and go on this i get the error

"var1 undeclared (first use in this function)"
and so on for each variable.

I ONLY want to use those vars inside of that exact function, I don't want them to be accessed anywhere else. Why do I have to declare it somewhere? Or how do i declare it so that is it only used inside that function?

Thanks in advance,
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It doesn't look as though you've defined an object type for your variables...
You'd need to write:
int var1 = 1;
(Unlike PHP, you can't use variables without types like that in Objective-C - or many other languages).

Once declared, you can access the variable directly:

var1 = 5*12;
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Member Since: Mar 15, 2007
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To add to what Aptmunich said, your problem here seems to have been more of a lack of understanding of the C language rather than with Objective-C. You may want to take a step back and find some C language tutorials or books to dive into and gain an understanding of before you start adding Objective-C's extensions to the mix.
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