Suppose You Would Like Your Code to Perform Several Tasks

question 31

Multiple Choice

Suppose you would like your code to perform several tasks: Use a For…Next loop with an InputBox to prompt the user four times for the price of four different T-shirts, then display each shirt price with a 25% discount in the ListBox lstResult. Which of the following code segments correctly performs these tasks?

• A) Dim intIndex As Integer Dim sngPrice, sngDiscountPrice As Single
• For intIndex = 0 To 4
• SngPrice = CSngInputBox"Enter price of shirt " & intIndex.ToString))
• SngDiscountPrice = sngPrice * 0.75
• LstResult.Items.AddsngDiscountPrice)
• Next
• B) Dim intIndex As Integer Dim sngPrice, sngDiscountPrice As Single
• For intIndex = 0 To 4
• SngPrice = CSngInputBox"Enter price of shirt " & intIndex.ToString))
• SngDiscountPrice = sngPrice - .25 * sngPrice)
• Next
• LstResult.Items.AddsngDiscountPrice)
• C) Dim intIndex As Integer Dim sngPrice, sngDiscountPrice As Single
• For intIndex = 1 To 4
• SngPrice = CSngInputBox"Enter price of shirt " & intIndex.ToString))
• SngDiscountPrice = sngPrice * 0.75
• LstResult.Items.AddsngDiscountPrice)
• Next
• D) Dim intIndex As Integer Dim sngPrice, sngDiscountPrice As Single
• For intIndex = 1 To 4
• SngPrice = CSngInputBox"Enter price of shirt " & intIndex.ToString))
• SngDiscountPrice = sngPrice * 0.25
• LstResult.Items.AddintIndex & " " & sngDiscountPrice)
• Next

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Definitions:

Population Density

The number of individuals of a species per unit of area or volume at a given time.

Individuals

Separate and distinct organisms or entities, often used in the context of discussing a single member of a species.

Natural Selection

The process by which traits become more or less common in a population due to consistent effects upon the survival or reproduction of their bearers.

Adaptive Changes

Adjustments or modifications in organisms or populations that enhance their survival and reproductive success in a particular environment.