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Exam 6: The Repetition Structure

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Question 1

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You can delay program execution using the ____ method.

A) Delay
B) Rest
C) Sleep
D) Break

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Question 2

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What is a counter? What does it mean to initialize and update a counter in a program?

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A counter is a numeric variable used for...

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Question 3

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Which of the following statements selects the "blue" item,which appears fourth in the lstColor control?

In either pretest or posttest loops,the controlling condition is evaluated with each repetition.

The symbol used to represent a loop condition on a flowchart is the ____ symbol.

Adding increments of a negative number is referred to as ____.

You should use a ____ control to provide keyboard access to a list box.

The strCode variable contains an uppercase letter.Write two different Do...Loop clauses that process the loop instructions as long as the value in the strCode variable is either A or B.Use the Until keyword in the first clause,and use the While keyword in the second clause.

A unique number called a(n) ____ identifies each item in a collection.

In a pretest loop,the evaluation of the condition occurs after the instructions within the loop are processed.

What is a counter-controlled loop and when is it used in a program? What statement provides the most efficient way to write a counter-controlled loop?

Write a pretest loop that adds together integers from 1 to 50.Use the intNumber variable (which contains the number 1)to keep track of the integers.Store the result in the intResult variable (which contains the number 0).Use the Do...Loop statement and the While keyword.

A list box should contain a minimum of ____ item(s) .

The loop created by the For...Next statement is a ____ loop.

The repetition programming structure is used to make decisions in a program.

The following sample of code contains errors. Rewrite the incorrect statements to correct all errors. -'fill list boxes with values for men's pant sizes for 'pant waist and pant length For intWaist As Double = 28 to 46 lstWaist.Items(intWaist.ToString("N0")) Next intWaist SelectedItem = "28" For intLength As Integer = 26 to 36 Step .5 lstLength.Items.Add(dblLength.ToString("N1")) Next dblLength lstLength.SelectedIndex = "26"

Explain the difference between using the keywords While and Until within a Do...Loop statement.

Visual Basic's ____ class contains many methods that your applications can use to perform financial calculations.

Write a pretest loop that adds together the integers 2,4,6,8,10,12,14,16,18,and 20.Use the intNum variable to keep track of the integers.Store the result in the intResult variable (which contains the number 0).Use the For...Next statement.

You can use either the SelectedItem or ____ property to determine whether an item is selected in a list box.