CS 230 Fall 2006

Assignment 7 – Sub Procedures and Function Procedures

100 points

Assigned: 10/18/2006

Due: 10/25/2006 at the start of class

Pre-Lab (Do Before Lab):  Bring a new disk. Plan out tasks, objects, and events needed for program. Plan out major pseudocode. Put some thought into this. The more clever you are, the less code you will write on this assignment.

Main Assignment:

In many soccer competitions, a group of teams play each other (“round robin”), and wins, losses and ties are tallied. The teams are ordered in standings based on 3 points for each win, 1 point for each tie, and 0 points for each loss (similar but different from hockey). (This is the only knowledge of soccer that you need). We’re going to implement a simplified program that will for 4 teams in a group calculate the points for each team (the user must type in the number of wins, losses, and ties for each team).

Provide capabilities for 1) calculating the points for all teams, 2) clearing the wins, losses, ties, and points for all teams, 3) clearing the above plus the team names for all teams, and 4) quitting the program. 

This assignment is intentionally designed to reward use of procedures and functions – they will save almost 75% of the code you might write without them. You must write some sub procedures and function procedures for this assignment (and use them!)

Hand in:

• Floppy disk with an entire folder containing all files related to the project.  Please set the name of the project to something other than the default name (WindowsApplication1, …). Use Windows to copy the whole folder, instead of trying to “Save As”.
• Print out of your code.

Miscellaneous:

• You must turn on Option Explicit and Option Strict.
• For validation – all entered numbers (wins, losses, and ties for all 4 teams) need to be whole numbers between zero and six (use a symbolic constant rather than embedding 6 in the program). Don’t write almost the same code 12 times!! Write a function procedure and call it wherever needed.
• As part of the simplification of this assignment, we are NOT going to worry about "Cross-validation" - The total number of wins should equal the total number of losses; the total number of ties should be even - Don't worry about these.
• The calculation of points is fairly simple, but it is needed 4 times. Write a function procedure and call it where needed!
• Note: Procedures cannot be written general enough to be used multiple times if they refer to specific text boxes. Instead pass the textboxes’ text into a string parameter.
• MAKE SURE YOUR PROGRAM WORKS! (i.e. gets the correct answers). Now that our program is branching and looping, we need to try more examples to make sure they work. Think, “what different possibilities need to be checked?” For each, calculate the correct answer by hand and see if your program gets it!
• Put YOUR NAME, e-mail address, date, and purpose of the program in comments at the beginning of the program.
• You MUST include comments that explain your program in order to get full credit.
• Remember to use meaningful variable names, and indent to show the structure of the program (VB usually does this correctly).
• Put your name on the form as a Label or as part of the form title.
• Try to use good user interface design. Make clear what user needs to do and what the answers mean.