Changes

As previously described, enumerators allow the programmer to predefine the range of values that can be assigned to a variable and use self-explanatory names when setting those values. The benefits of this are twofold. Firstly this makes code easier to read and understand and secondly this, to a certain extent, allows control of the values that can be assigned (though as we will see later in this chapter, enforcement is rather weekweak).

As we can see, although we assigned ''hot'' to our currentTemp variable, Objective-C translated it to the corresponding number 95. If we attempt to assign a value using an undefined name as follows the code will fail to compile with a '''tepid' undeclared'' error message: