pointers - Objective C Primitive Types -

i've been reading objective-c datatypes , primitive types inherits c.

data types bool inherited type-def bool, declared like:

bool mybool;

where nsstring declared like:

nsstring * mystring;

my doubt how know when use * , when not to? primitive types don't need *, know that, that's little confusing because

eg:

nsstring * mystring;

where

nsinteger myint;

so doubt is, understand using * objective c's own data types no * primitive types.

but in example above nsinteger primitive type. how differentiate between primitive , non-primitive data types ? (ns prefix isn't correct answer)

Yet