READING
Chapter 6
Section 2
"Pitfalls in Writing Repetition Statements"

- infinite loop: loops that never terminates
- overflow error: assign a variable a value bigger than it's data type's maximum
  - for reals, Java assigns a value representing infinity
  - for integers, value "wraps around" and starts counting from the minimum again
- using real numbers for testing and increment
  - only an approximation of real numbers can be stored in a computer
  - avoid because approximation makes non-deterministic
- off-by-one error
  - to make a loop execute N times
    - initialize the counter to 0 and use < N
    - initialize the counter to 1 and use <= N
- shorthand assignment operators
  - a op= b;
  - equivalent to a = a op b;
  - +=, -=, *=, /=, %=
  - precedence lower than arithmetic operators

Quick Check:
1. a. is infinite because we start with 0 and keep increasing i, but only test for i >= 0
   b. is not infinite because we start i at 100 and decrement it in increments of 1; this is poor style, however, since if we changed the decrement increment, it might easily become an infinite loop
2. a. sum == 1 + 2 + ... + 9 == 45
   b. count: 1, 4, 7, 10, 13, ... 31
      sum: 1, 5, 12, ... , 145
   c. count: 0, 2, 4, 6, ... 20
      sum: 0, 6, 18, 36, ... 270