Create an application that either sums or averages the rows or columns of a two-dimensional array depending on user choices. Use the following data for the array:
THE DATA ARRAY IS ATTACHED TO THIS POST AS A .GIF (Very Small)
Create a menu bar with a File menu that includes a Perform Action command and an Exit command. The Perform Action command computes either the sum or the average of the rows or columns in the array and displays the result in a message box. The Exit command exits the application.
Create a second menu on the menu bar called the Action menu. Add a Sum Rows command, Sum Columns command, Average Rows command, and Average Columns command to the Action menu. Use the RadioCheck and Check properties of each command to allow the user to select a command on the Action menu. The Perform Action command checks to see which command is selected on the Action menu to determine which operation to execute when the user clicks the Perform Action command.
Include appropriate shortcut keys for all commands. After the Perform Action command executes, the program should display the results in a message box. The message box should display results for each row or column separated by a ControlChars.NewLine character. The message box also should ask the user if she or he wants to continue or to exit the application.
The array data should be displayed on your form in a row/column format when the program starts.
The file should be a zip of all necessary files to demonstrate the program.
Requirements:
The contents of the 2 dimensional array are fixed as given
The user can choose to do one of the four calculations
the sums of columns
the sums of rows
the averages of columns
the averages of rows
The result should be displayed in a message box, with each sum or average starting in a new line, e.g.
Sum Rows
36
38
13
16
The user should be asked whether he or she wants to exit or continue.
Interface Design
Form for the Array Calculations
Create File menu and Action menu on the menus bar (see pp. 98-107)
Array application
File
Action
Perform Action
Exit
Sum Rows
Sum Columns
Average Rows
Average Columns
shortcut keys for commands
The result Message box
Message and results
Title of the message box
YesNo message button
Default button
Logic
Declare the matrix as a global integer array, see text
Code MenuItem event handler for Action Menu:
Code the MnuSumRow_Click, MnuSumColumn_Click,
MnuAverageRow_Click, MnuAverageColumn_Click event procedures.
Example:
Private Sub MnuSumRow_Click(…..)
MnuSumRow.Checked = True
MnuSumColumn.Checked = False
MnuAverageRow.Checked = False
MnuAverageColumn.Checked = False
End Sub
Code MenuItem event handlers for File Menu:
? Code MnuExit_Click event procedure
? Code MnuPerformAction_Click event procedure:
o If MnuSumRow.Checked Then sum the rows
o If MnuSumColumn.Checked Then sum the columns
o If MnuAverageRow.Checked Then average the rows
o If MnuAverageColumn.Checked Then average the columns
o In general,
1. Watch your indices: remember that it runs 0 to 3 for the row index, and 0 to 4 for the column index for a 4 by 5 matrix
2. Beside the sum of each row, use the “ControlChar.NewLine” to start a new line in your string result.
3. You should format your output for the Average operations to show at least one decimal place.
o Display the output and give the user a choice to exit:
The logic of this project may be complicated enough that a debugger will help. Please read chapter 8.
