Hello everyone, this chapter will introduce the compound types of variables in OC.
The composite types in OC include enumeration, structure, and union, which is the same as C. But it does not have an array, and provides array types through NSArray in the Foundtion library. In addition, it also provides this type of class, which is its most basic feature as an object-oriented language.
Look at the officials, if you want to know what is going on, listen to the next breakdown!