CSC 230: The Week beginning Oct. 22

Homework

No homework this week.

Due: Oct. 29

• Monday

  
  Fall Break
  
  

• Wednesday

  
  Chinese Food program description
  ChineseFoodZip.zip (files)
  ChineseMenuZip.zip (program)
  
  

• Thursday

  
  The Matrix Quiz.
  
  
  
  
  
  
  

  MatrixQuizZip.zip (images, text file and exe)

  Questions and answers taken from http://www.triv.net/html/Users6/u15218.shtml

  • Design a form like that shown above:
    • upper left, a label for the question
    • lower left, a panel with four radiobuttons for the possible answers
    • upper right, a picturebox
    • middle right, two buttons, one to check answers, one to proceed to the next question
    • lower right, a label for the results
  • In the Form's Load method, read the Matrix Quiz file which you have placed in the bin folder of the project.
  • Read and parse the file based on lines, place these in an array (declared at the class level, i.e. at the top).
  • Shuffle the lines so that they are in random order. We will proceed through them one by one, thus we will need a counter (as in Art Slide Show).
  • Load the first matrix image file into the picturebox.
  • When the Next button (which initially says "Start Quiz") is clicked,
    • Take the current line under consideration and parse it on a "/". The first token is the question, the second token in the correct answer, and the third token is a comma-separated string of possible answers.
    • Parse the comma-separated string of possible answers on a comma to obtain an array of possible answers, shuffle them, load them into the radiobuttons.
    • Make sure none of the radiobuttons are selected by setting their Checked property to False.
    • If it is not the first time the button is being clicked, display the number of correct answers and the number of questions asked so far.
    • Disable the Next button and Enable the Check button.
    • If you are out of questions, then disable the Check button as well.
    • Increment your counter and change the picture. There are more questions than pictures, so the pictures have to be cycled around.
  • When the Check button is clicked,
    • Enable the next button and disable the check button.
    • Compare the user's guess as indicated by the radiobuttons, to the correct answer. If they match, display a "Correct" message. If they don't match, display an "Incorrect" message and tell the user the correct answer.
    • Keep track of the number of correct answers.
  
  
  

• Friday

  
  QuoteQuizZip.zip (last Friday's program)
  We reviewed shuffling: ChineseWithShuffle.zip (adds shuffle and more to Chinese Food menu program)
  
  We discussed RadioButtons. First we discussed the TabIndex. A user can navigate through controls that can have the "focus" by hitting the Tab key. The TabIndex determines the order of the controls that receive the focus as one tabs. This arose in the context of RadioButtons because we observed in certain circumstances RadioButtons that were not checked in design or code were being checked when the Form started because it was the first control to receive the focus. Giving some other control that TabIndex of 0 helped.
  
  Next we wrote a progam RadioButtonDemo.zip with two sets of RadioButtons that changed the Form's color. One set did not change the Form's color until a Button was Clicked. (It demoed looping through RadioButtons in a GroupBox.) In the other set, it was the RadioButtons' events that changed the Form's color. (It demoed having one subroutine handle multiple events.)