OOP: Nested classes

• If you need to define a class that is only going to be used to serve another class, then it may be appropriate to embed it inside the class it serves.

• Nesting allows us to hide the nested class.

• NestedClass does not contain the attributes of OuterClass, they are independent in that sense, but it can access those attributes.

class A {
private:
int a;
class B {
private:
int b;
public:
B(int bb) { b = bb; }
};
public:
A(int aa) { a = aa; }
class C {
private:
int c;
public:
C(int cc) { c = cc; }
};
};