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

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

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,
Chris

It doesn't look as though you've defined an object type for your variables...
You'd need to write:
(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:

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.