CSC 120A Lab Assignment 6 - Fall 2004

Thursday, October 7, 2004

Please work with the same partner as last week. This program will count as two lab grades.

Exercises:

In this lab, you will finish up the check printing program from last week's lab and also add some new features to it. Remember, this program only requires a few well-designed if statements. If you find yourself writing code that's starting to look like a pile of spaghetti, please stop and think about your algorithm again, or ask me.

• First, finish coding up the basic algorithm for converting numbers to words. Make sure your code is well-commented to explain how your implementation of the algorithm works. Test your program with a set of carefully selected test cases.
   
• Make sure the spacing between words in the spelled-out check amount comes out correct in all cases.
   
• When writing out the dollar amount of the check, the first letter of the string should be capitalized and all the other letters should be lowercase. (There is an easy way to do this using the substring and toUpperCase methods that we've learned about, and there is a hard way to do this ...)
   
• When you print out the numeric amount of the check, make sure that a value like "34.50" prints out that way, and not as "34.5". (When Java converts such a double value to a String it doesn't include the extra 0 -- you need an if statement to check for this case and add the extra 0 to the string that is printed out.)
   

• Finally, instead of printing your checks out on the screen, modify your program so that it saves the printed check to a text file in the current directory. The output file should be given the name "CheckXYZ.txt", where XYZ is the check number. After getting the check information from the user, your program should open the output file, print the check to the output file, and display a message on the screen informing the user that the check has been saved to a file (also tell the user the file name).

  For this exercise, you may modify the CheckDriver.java file as well as your own Check.java file. Make sure to turn in both files.
   

• Extra credit: (Only do this after you've finished all the other parts of the exercises) Modify your program so that if the user enters a date like "10/2/2004", the actual date prints on the check as "October 2, 2004". (You can assume the user will input a four digit year, or you can be fancier and convert two digit years to the four digit string.)

Hand in

Hand in a printout of your Check.java and CheckDriver.java files and also upload them to the VikingWeb. If you want more time to work on the extra credit, you may submit your solutions by next week's lab session, October 14, but no later than that.

Last modified: Wed Nov 24 12:53:40 EST 2004