Free and Malloc in a Loop - Correct Way to Free Memory?

Question

I have the below loop (code simplified) :

for (int y = 0; y < 20; y++) {

self.array[y].numbers = [self getNumberData:source objectPass:object];

}

This calls the get NumberData method. In this code a malloc method is used, e.g :

object->item1 = malloc(sizeof(Class) * object->item2);

My question is how do I correctly free up the malloced memory ?

The self.array[y].numbers is a C struct.

Can I just put free (array) in the dealloc method ?

Thank you.

Answer 1

You must pass the pointer returned by malloc to free.

So, if you've malloced up the whole array of structs in one swell foop, you can (and must) free the whole thing, as well.

If you've malloced each struct individually, you must free each, as well.