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Notes:        <08>            
Labs:          
Wed Apr 27 17:10:57 PDT 2011

# CS202 session 08 -- Recursion

## Previous -- OO Design

[ 07.html ]

## Preparation

Study Chapter 10 and [ Recursive_definition ] on the Wikipedia and do Review Questions from chapter 10.

## Recursion is fundamental

Recursion is a fundamental idea in computer science. And tends to turn up in many surprising areas such as fractals. Enjoy [ Fractals ] (They won't be tested...)

## Due in -- Qn+ans + Project

Hand in one question+answer at the start of class. What ever state your project 1 is in -- hand it in NOW.

## Class Work

[ 08q.html ]

. . . . . . . . . ( end of section Class Work) <<Contents | End>>

## Classic Example of Recursion -- The towers of Hanoi

[ Towers_of_Hanoi ]

## Next -- Algorithms

Bring to class -- a deck of 52 cards!

Study todays handout [ alg.html ] (HTML) or [ alg.pdf ] (PDF for iBooks...) and instructions [ 09.html ]

Next project due in session 12, bonus in session 11. Next quiz in session 12.

# Glossary

1. accessor::=`A Function that accesses information in an object with out changing the object in any visible way". In C++ this is called a "const function". In the UML it is called a query.
2. Algorithm::=A precise description of a series of steps to attain a goal, [ Algorithm ] (Wikipedia).
3. class::="A description of a set of similar objects that have similar data plus the functions needed to manipulate the data".
4. constructor::="A Function in a class that creates new objects in the class".
5. Data_Structure::=A small data base.
6. destructor::=`A Function that is called when an object is destroyed".
7. Function::programming=A selfcontained and named piece of program that knows how to do something.
8. Gnu::="Gnu's Not Unix", a long running open source project that supplies a very popular and free C++ compiler.
9. mutator::="A Function that changes an object".
10. object::="A little bit of knowledge -- some data and some know how". An object is instance of a class.
11. objects::=plural of object.
12. OOP::="Object-Oriented Programming", Current paradigm for programming.
13. Semantics::=Rules determining the meaning of correct statements in a language.
14. SP::="Structured Programming", a previous paradigm for programming.
15. STL::="The standard C++ library of classes and functions" -- also called the "Standard Template Library" because many of the classes and functions will work with any kind of data.
16. Syntax::=The rules determining the correctness and structure of statements in a language, grammar.
17. Q::software="A program I wrote to make software easier to develop",
18. TBA::="To Be Announced", something I should do.
19. TBD::="To Be Done", something you have to do.
20. UML::="Unified Modeling Language".
21. void::C++Keyword="Indicates a function that has no return".