{
BOOL gameCenterAvailable;
BOOL userAuthenticated;
}
the above two are called member Variables
They can't be accessed outside the class.(Important point) (unless you provide custom getters and setters)
if you make a @property then the variable can be read inside the class as well as outside the class..so the setters and getters are generated for you..automatically
then declaring the same as a member variable isn't required..
It is just done to increase Readability .. you can read it easily than reading
@property (non..)
