Outline for October 8, 2012

1. Iteration
   1. Definite loops: execute a specific (definite) number of times
   2. Indefinite loops: execute until a general condition is false
2. For loops
   1. General form: for i in iterator
   2. Iterator is either list or something that generates a list
   3. Very common form: for i in range(1, 10)
3. range() in detail [for.py]
   1. range(10) gives 0 1 2 3 4 5 6 7 8 9
   2. range(3, 10) gives 3 4 5 6 7 8 9
   3. range(2, 10, 3) gives 2 5 8
   4. range(10, 2, -3) gives 10 7 4
4. Program: counting to 10 [toten.py]
5. Program: sum the first 10 squares [sumsq.py]
6. Program: Fibonacci numbers [fib.py]
7. Decision structures
   1. If statement
   2. Executes once, based on condition
   3. Syntax
8. Conditions
   1. Resolves to boolean value
   2. Literal booleans: True (1), False (0)
   3. Testable as true or false
   4. Relational operators
      1. Use two arithmetic expressions connected with relational operatorsto create a boolean
      2. Relational operators: >, >=, <, <=, ==, !=
      3. Precedence: resolved after arithmetic operators
      4. 6 > 2 + 3; "UCD" == "Sac State"

ECS 10, Basic Concepts of Computing Fall Quarter 2012