Organizing Types Within Namespaces
Namespaces are defined within
Namespace..End Namespace blocks. Every namespace can expose the following types and members:
• Nested namespaces
Listing 9.1 shows an example of a namespaces exposing most of the preceding listed members.
As you can see from Listing 9.1, you can organize your custom objects within a namespace. The code implements an abstract class
Person, three derived classes ...