• READING
• two-dimensional (2D) arrays -- matrices
• storing systems of equations
• multi-dimensional arrays -- can you picture a 6 dimensional array?

• We now know everything there is to know about C++ so we have the day off ...
• not!

• Quiz 10

• Software Engineering - a6 dataBase conversion
• more on arrays of structs

• evaluating polynomials efficiently

• summary of numerical methods
  • (c/a) * a = c in algebra; (c/a*a == c) maybe not be true computationally
  • addition is not associative on a machine
  • don't compare Reals -- use either:
        if (fabs(x-y) < ABSOLUTE_ERROR) or
        if (fabs(x-y)/x < RELATIVE_ERROR)
  • always trap
    • division by zero
    • bad arguments to library functions, e.g., ln(-2), sqrt(-3)
    • use explict casting
    • overflow (e.g., European Space Agency's Ariane 5 rocket crash)

15W -- Wed, Dec 7

• evaluations

• Lab 13
• Part V due: completed move to your /www space?

15F -- Fri, Dec 9

• a6 due

• A peek into COMP 116 Data Structures ...

FINAL EXAM -- TBA