.Open CS202 session 16 Scoping
. Previous -- Exceptions
.See ./15.html
. Preparation
Study
Chapter 18
and do Review Questions.

Notes:  In practice avoid `protected data members` and `private inheritance`!
. Due in
Hand in one even-numbered question+answer at the start of class.

Bonus for Perfect Project 3 today at start of class.
.Open Class Work
. Dr Schuberts Explanation of friends
. What is encapsulation in Computer Programming
. List as many Name Scopes as you can
. What is shadowing in C++ and is it a good thing
. How can you avoid polluting the global scope with constants
. What does this function return when called 4 times as shown
.As_is int f() {static int c=0; c=c+1; return c; }
.As_is ...
.As_is 		cout << f() << "\n";
.As_is 		cout << f() << "\n";
.As_is 		cout << f() << "\n";
.As_is 		cout << f() << "\n";
. What does this return when called 4 times
.As_is int f() {       int c=0; c=c+1; return c; }
. What is the best way to give only derived classes access to data in a base class
. How does a function become a friend of a class
. Give a well known example of a nested class in the Standard Template Library
. When do you create namespaces
.Close
. Next -- Class Hierarchies
.See ./17.html

Next project due in next class.
Next quiz in next class and on chapters 16,17,18, and P3.

(2011 Memorial Day): Holiday on Monday.
.Close