Lab 4.0 - Quiz Show

Quiz Show

Quiz shows have been around since the early days of broadcasting. Some, like this one, are based on random chance.

The rules of this Quiz Show are as follows. Two numbers are chosen randomly, between one and ten. A math operator is also randomly chosen (+, -, *, \ (integer division), or Mod). The contestant is shown the question, and then asked for the answer. Each incorrect guess makes the contestant lose one point, and each correct answer is scored based on the type of question it is:

+ 2 points
- 3 points
* 4 points
\ 5 points
Mod 6 points

After ten questions, the game ends and the final score is displayed.

Create an application that runs this Quiz Show for one contestant. Use a InputBox to get the answer from the user. Keep asking the user for the answer to a question until he or she gets it right. Keep a running total of the user's score, starting at zero, and report the score at the end of the game.

HINTS: Use either a Do-Loop-While or a Do-While-Loop (you'll have to figure out which) to run the answer algorithm until the user gets it right. You'll need a variable for the score. You'll also have to figure out a good algorithm for selecting a random operator. This isn't an obvious lab, so try using decomposition first!

Here's the code I used:

'Aaron Pavao
'31 October 2013
'Quiz Show
'A game that asks math questions.
'Kidnap the Sandy Claws, hit him with a stick

Public Class frmQuizShow

    Private Sub btnPlay_Click(sender As Object, e As EventArgs) Handles btnPlay.Click
        'loop for 10 questions
        '   generate the question
        '   display the question
        '   loop for answer
        '       ask, if correct then done
        '       if wrong then -1 point
        '   add points
        '   display result
        'display final score

        Dim intQuestion As Integer
        Dim intScore As Integer
        Dim intNum1 As Integer, intNum2 As Integer
        Dim intOp As Integer
        Dim intAnswer As Integer, intResponse As Integer

        For intQuestion = 1 To 10
            intNum1 = Int(Rnd() * 10) + 1
            intNum2 = Int(Rnd() * 10) + 1
            intOp = Int(Rnd() * 5) + 2

            lblNum1.Text = intNum1
            lblNum2.Text = intNum2

            If intOp = 2 Then
                lblOp.Text = "+"
                intAnswer = intNum1 + intNum2
            ElseIf intOp = 3 Then
                lblOp.Text = "-"
                intAnswer = intNum1 - intNum2
            ElseIf intOp = 4 Then
                lblOp.Text = "*"
                intAnswer = intNum1 * intNum2
            ElseIf intOp = 5 Then
                lblOp.Text = "\"
                intAnswer = intNum1 \ intNum2
            ElseIf intOp = 6 Then
                lblOp.Text = "Mod"
                intAnswer = intNum1 Mod intNum2
            End If

            Do
                intResponse = InputBox("Please enter your guess.", "Answer")
                If intResponse = intAnswer Then
                    MsgBox("Correct!", , "Good!")
                    intScore += intOp
                Else
                    MsgBox("Try again.", , "Wrong")
                    intScore -= 1
                End If
            Loop While intResponse <> intAnswer

        Next intQuestion

        MsgBox("Final Score: " & intScore, , "Game Over")

    End Sub

    Private Sub frmQuizShow_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        Randomize()
    End Sub
End Class