Computer Science 15-100 (Sections T & U), Fall 2007
Class Notes, Day 8:   Tue 25-Sep-2007

Logistics

1. Schedule
   • Quiz 3 is today -- covers same material as Quiz2!
   • Hw4 due Friday
   • Test 2 is 23-Oct
   • Test 3 is 20-Nov
2. This Week's Office Hours
   • Tue:  4:30-5:30pm, DK, WeH 5215
   • Wed: 2-3pm, Grant, Engineering Library Group Study Area, 4th Floor WeH
   • Wed: 6-7pm, Jamie, WeH 5419
   • Thu: 4:30-7pm, DK, WeH 5215
   • Thu 7-9pm, Jamie, WeH 5419
   • Thu 9-11pm, Grant, WeH 5419
3. Reading
   • L&L Sections 5.1 - 5.9

Topic Outline:

1. Boolean expressions
   
   a)  Equality and inequality operators
   
   b)  Relational Operators  (<, <=, >, >=)

   c)  Logical Operators (!, &&, ||)

   d)  Truth Tables and Logical Operators
   
   e)  Short-Circuit Evaluation
    

2. "if" Statements
   
   a)  The "if" statement

   b)  The "if-else" statement

   c)  Aside:  A Block { ... } is a Statement!
   See If Statement syntax diagram on p. 218

   d)  The "if-else-if-...-else" construct

   e)  Nested "if" statements

   f)  The "dangling-else" problem
    

3. The Conditional Operator (?:)
    
4. Switch Statements
   See syntax diagram on p. 232
    
5. Comparing Data

   a)  Comparing Floats and Doubles

   b)  Comparing Characters

   c)  Comparing Objects (== versus .equals())

   d)  Comparing Strings with compareTo()
    

6. The "while" Statement
   See syntax diagram on p. 235
   
   a)  Simple Example
   
   b)  Infinite Loops
   
   c)  The break statement
   
   d)  The continue statement
   
   e)  Nested Loops
    
7. The "do" Statement
   See syntax diagram on p. 250
    
8. The "for" Statement
   See syntax diagram on p. 253
    
9. Iterators
   
   a)  Without "for" loops
   
   b)  With the new "for-each" loop
    
10. Reading Text Files
     
11. Comparing Loops (while, do, for)
     
12. Drawing with Loops and Conditionals

Carpe diem!