Pointers — you either love them, or you haven’t fully understood them yet. But before you storm off to the comment section now, pointers are indeed a polarizing subject and are both C’s biggest ...

a_struct.pmem_i; // the type is, wait for it, int* volatile (the pointer is volatile not the object it is pointing to) The second line is a very important point to keep in mind when declaring structs.

volatile warns the optimizer that a variable can change without notice, so we need to know why that would ever matter. And for that, we’ll take a quick glimpse into the logic of (one type of) compiler ...