Thread: Can't change variable from another function...

I have a function foo()

foo has a local variable var

I want to change var from inside another function

Thus, I figured I would do a call to the other function with &var and then change var by dereferencing it and setting it to its new value.

Apparently this doesn't work... or I am doing something wrong.

Here's what I have (in a nutshell):

Code:

foo () {
unsigned int var = k;
printf("var before: %d\n", var);
bar(&k);
printf("var after: %d\n", var);
}

bar(unsigned int* to_change) {
*to_change = z;
}

=====
[$] ./code

var before: k
var after: k
=====

Why is var not z!?!? And how do I get it to be z??

Edit: I just packed them in a malloc'ed array and changed it that way. Still curious as to how this is done though. I recall something like "Handles" but I couldn't find anything useful in Google.

Edit #2: People shouldn't be allowed to post at 5am... ugh.