3. Given the following program (including a user interface) e), answer questions

Question

3. Given the following program (including a user interface) e), answer questions(20 points). - Horse Race Firishing Position: 2 Evakuate Postion Plac Private Sub EvaluateButton_Click(sender As System.Objec EvaluateButton Clici t e As System.EventArgs) Handles Dim position As Integer If PositionTextBox.Text.Trim String.Empty OrElse Not IsNumeric(PositionTextBox. Text) Then txtoutcome.text- 'The input must be a number!" position Clnt(PositionTextBox.Text) Select case position Else Case 1 Case 2 Case 3 Case 4,5 txtoutput.text-" win" txtoutput.text- place* txtoutput.text-show botoutputtext=" you almost placed in the money." Case else

Explanation / Answer

According to the program, the value in the PositionTextBox is taken using PositionTextBox.Text function when button "Evaluate position" is clicked. -> If that value is empty or not a number then it is checked using if condition of the program. If the condition is true that is it is not a number or left empty then on clicking the Evaluate position button, the output text box will display message "the input must be a number". -> If the condition is false, that is when a number is entered then else part of the loop gets executed. The value from the PositionTextBox is taken in a variable called position and a select case is executed based on the value, that is if number passed is "1"(i.e case 1 gets executed) then txtoutput (output display box) will display "win". Similarly, for number 2, case 2 gets executed and so on till number 5. -> If value passed is a number and is not in range of 1 to 5 then else part of select case gets executed and the message in the output display box will be "out of the money". Therefore, answers are: a) "win" would be displayed as case 1 gets executed. b) "out of the money" would be displayed as else part of select case gets executed as number is out of range, not in (1,5). c) "The input must be a number" would be output as "none" is a string and not a number, that is if part of the loop gets executed.

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