CSC 230: Week of 10/01/12

CSC 230: The Week beginning Oct. 1

Homework:

Provide a brief definition of the following terms (in the interface programming context):
- Scope
- Pseudo-Random
- Syntax error
- Runtime error
- Break versus continue (in a loop)
If you use a source (book or web site), cite your source. (The sites http://whatis.techtarget.com/ and http://www.webopedia.com/ are decent sources for technical definitions.) The section on loops (for break/continue) is in Chapter 3 of Beginning JavaScript (Wilton and McPeak).

Movie rater page instructions (PowerPoint). You may need Star2.gif

Due: Oct. 8
Monday:

HorseRace_Timer2.htm
GPA_Calculator_2.htm

We wrote DropDownPopulator.htm in class. It works in FireFox and Chrome but not in Internet Explorer.
Tuesday:

Muybridge Film Strip. Write a page that allows the user to choose a number between 1 and 11 that corresponds to the number of frames in a "film strip". When the button is clicked, use a for loop to construct the film strip. I used a table, each row had three cells. The first cell holds an sprocket image (SprocketLeft.gif); the second cell holds a horse image which changes with each row (horse1.jpg, horse2.jpg, etc.); the third cell holds the other sprocket image (SprocketRight.gif). I made the table's background-color to black, and I had to set the height attribute of the images. If the user changes the number in the drop-down select the "film strip" should be removed from the display. (Uses MuybridgeStripImages.zip)

Factorial
Write a program that uses a loop to calculate a factorial of a number from a drop-down select. It should also display the way the calculation was done. See example in figure below.

Straight Line Depreciation Write a progra that produces a straight-line depreciation schedule. The user would enter the initial value of the item, the "salvage value" -- the presumed value of the item after it has been used a number of years, and the lifetime -- the expected number of years the item will be used. The program then takes the difference between the initial and salvage values and divides that by the lifetime to produce the amount the item is depreciated each year. Then use a loop to produce the depreciation schedule: a list of years and the value of the item in that year. See below.
Wednesday

DropDownPopulator_2.htm (version of drop-dwon select populator that works in Internet Explorer)
MovieRaterHeadStart.htm

SomethingAboutFactorial.htm We discussed displaying the factorial calculation.
DepreciationDiscussion.doc We discussed how to proceed with the third part of yesterday's lab.
Friday:

Dice images: Die1.gif, Die2.gif, Die3.gif, Die4.gif, Die5.gif, and Die6.gif.
DiceRoll2a.htm
DiceRoll2a_after.htm (added button disable so did not have multiple Interval timers).
SnakeEyesCounting.htm uses a while loop to roll until snake eyes (two ones) is rolled. Then uses nested loops to average the above over many samples. For a large number of samples we should find an average of 36 rolls.