Defining Class Types
Class types are defined using class specifiers. Class types can be declared using elaborated type specifiers as shown in Type Specifiers. The class specifier consists of:
The class, struct or union keyword.
The class heading The class heading includes the class name and the applicable template heading.
Optionally, a colon and the base list which identifies the base classes that the class being defined inherits from.
Braces ({}) containing the class member declarations.
Class names are introduced as identifiers immediately after the compiler processes them (before entry into the class body); they can be used to declare class members. This allows declaration of self-referential data structures, such as the following:
// defining_class_types.cpp
// compile with: /c
class Tree
{
public:
void *Data;
Tree *Left;
Tree *Right;
};