A.4.3 Derived types

Beside the basic types, there is a conceptually infinite class of derived types constructed from the fundamental types in the following ways:   arrays of objects of a given type;   functions returning objects of a given type;   pointers to objects of a given type;   structures containing a sequence of objects of various types;   unions capable of containing any of one of several objects of various types. In general these methods of constructing objects can be applied recursively.