CS202   3- ‹#›
Single Inheritance
nWhen a class is derived from one base class, it is called single inheritance.
nIn this figure, the base class is account.
nAll classes are derived from this class, either directly or indirectly.
nchecking is also a base class of the student class, since student is derived from it.
nThis makes account an indirect                                        base class of student.
nNotice how single inheritance                                          has a tree-like structure.