| Exercises: |
- GPA Calculator:
- Add the following controls to your form:
- A group box containing semester information:
- A combo box listing the three semester names ("Fall", "Spring",
"Summer")
- A combo box listing years. Enter values going back to 1990 and
going forward to 2010.
- A group box containing course information
- A combo box that will contain a list of department code prefixes
("ISM", "MAN", "ACC", etc.) using a style that will allow the user to
select one of the choices in the list but also enter a different choice
if necessary.
- A text box to enter the course number
- A text box to enter the section number
- A text box to enter the course name
- A list box containing all of the possible letter grades ("A", "A-",
"B+", etc.)
- Another list box containing the corresponding grade points for each
letter grade entered in the same order as in the grades list box.
Set the height of this list box so that only one row shows and set the
enabled property to False. (Experiment with setting the Visible
property of this list to False)
- A check box that will indicate whether the current course is to be
counted in the GPA
- A label in which to record the total grade points earned for the
current course (Credit hours x Grade points for the grade earned)
- An Enter button
- A group box containing accumulated total information
- Three labels in which to record: Total credit hours earned, total
grade points earned, overall GPA
- An Exit button
- Create module-scoped variables of an appropriate data type to hold
total credit hours and total grade points.
- Write the following code for the form
- The Enter button will:
- Calculate the total grade points earned for the current course and
display the result in the appropriate label
- Update the module scoped variables containing total grade points and
total credit hours and display the results in the appropriate labels
- Calculate the overall GPA and display the result in the appropriate
label
- Clear the input controls
- Deselect the selected letter grade combo box. (Set its .SelectedIndex
property to -1 in code to do this.
- Write code for the SelectedIndexChanged event of the Grades list box
to set the .SelectedIndex property of the grade points list box to the
same .SelectedIndex property of the Grades list box. (Note that
this code will also deselect any item in the grade points list box when
the selection in the grades list box is cleared.)
- Write code for the Exit button to end the program. (Use
Application.Exit, not Me.Close to end the program.)
- Use the View | Tab Order technique to set the tab order for the
controls on the form. Test the tab order.
- Set hot keys for all appropriate controls.
-
 Mathematical
precedence Exercise--Create a form with text boxes (with identifying
static labels) to receive values for a, b, and c (txtA, etc.) four
calculate buttons, and four result labels.
- Have each button implement one of the calculations shown at the
right and display the results into the appropriate label.
- Do the calculations by hand or with a calculator and test your
results.
- Commenting–Properly comment your code according to the style used in
the sample programs.
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