Question 1

When using the Do...Loop statement to code a counter-controlled loop, you must include a statement to declare and ____ the counter variable.

Accepted Answer

When using a Do...Loop statement to code a counter-controlled loop, you must always include a statement to declare and initialize the counter variable. This will assign an initial value to the counter and prepare it for use in the loop. Without initialization, the loop will not function properly. Therefore, option A is the correct choice.

Question 2

You use the ____ method to select all of the text contained in a text box.

Accepted Answer

The correct method to select all text in a text box is the "SelectAll" method.

Question 3

Three styles of combo boxes are available in Visual Basic.

Accepted Answer

Three styles of combo boxes are available in Visual Basic, including Simple, Drop-down, and Drop-down List.

Question 4

The purpose of the ____ operator is to reverse the sign of a number.

Accepted Answer

The negation operator, denoted by a minus sign (-), is used to reverse the sign of a number by turning a positive number into its negative counterpart, and vice versa.

Question 5

A combo box cannot replace a list box.

Accepted Answer

A combo box can replace a list box as it offers the functionality of displaying a list of items and allows the user to select one or more items from the list. Additionally, a combo box also allows the user to type in their own value, which is not possible in a list box.

Question 6

In a For...Next statement, the declaration, initialization, update, and comparison tasks are handled by the ____ clause.

Accepted Answer

The For clause includes all the necessary elements for a For...Next statement, including the declaration and initialization of the loop variable, the comparison between the loop variable and a specified value, and the update of the loop variable at the end of each iteration.

Question 7

A ____ sign in a For clause indicates that the loop body will be processed as long as the counter variable's value is less than or equal to the number or variable following the sign.

Accepted Answer

The symbol <= represents "less than or equal to" in programming. The statement mentioned in the question signifies that the loop will execute as long as the counter variable's value is less than or equal to the number or variable specified after the <= symbol. Hence, option C is the correct answer.

Question 8

In the following For clause, if the stepvalue is negative, then the startvalue must be ____ to the endvalue for the loop instructions to be processed. For counter [As datatype] = startvalue To endvalue [Step stepvalue]

Accepted Answer

If the stepvalue is negative, it means that the counter is decreasing. Thus, the startvalue must be greater than or equal to the endvalue to ensure the loop is executed. So option B (greater than or equal) is the correct answer.

Question 9

Within a For...Next statement, the loop's condition is evaluated ____ the loop body is processed.

Accepted Answer

The loop's condition is evaluated before the loop body is processed, to determine whether or not the loop should continue.

Question 10

In the following For clause, you can use the ____ portion to declare the counter variable. For counter [As datatype] = startvalue To endvalue [Step stepvalue]

Accepted Answer

The portion "As datatype" is used to declare the counter variable and specify its data type. The other portions define the range and increment of the counter.

Question 11

In the following For clause, when you declare the counter variable using the For clause's As datatype argument, the counter variable has ____ scope. For counter [As datatype] = startvalue To endvalue [Step stepvalue]

Accepted Answer

The counter variable declared in a For loop using the As datatype argument has block scope, meaning it is only accessible within the For loop block where it is declared.

Question 12

The loop created by a For...Next statement is a posttest loop.

Accepted Answer

A For...Next statement creates a pretest loop, meaning it tests the condition before executing the loop body.

Question 13

A programmer uses a counter-controlled loop to process the loop instructions a(n) ____ number of times.

Accepted Answer

A counter-controlled loop is designed to execute a precise number of times, based on the value of a counter variable. The loop continues until the counter reaches a specific value, which is determined before the loop begins. Therefore, the best choice is D - precise.

Question 14

Unlike selection structures, repetition structures cannot be nested.

Accepted Answer

Repetition structures can be nested, allowing for multiple levels of iteration within a program. This is commonly achieved using loops within loops, such as a nested for loop or while loop.

Question 15

In the following For clause, when you declare the counter variable in a Dim statement at the beginning of a procedure, the counter variable has ____ scope. For counter [As datatype] = startvalue To endvalue [Step stepvalue]

Accepted Answer

The counter variable declared in a Dim statement at the beginning of a procedure has procedure scope, meaning it is accessible throughout the entire procedure in which it is declared.

Question 16

You can place one For...Next statement within another For...Next statement.

Accepted Answer

This is called a nested For...Next loop.

Question 17

Many programmers use a(n) ____ to represent the For clause in a flowchart.

Accepted Answer

The answer of Many programmers use a(n) ____ to represent...

Question 18

In the following For clause, if the stepvalue is positive, then the startvalue must be ____ to the endvalue for the loop instructions to be processed. For counter [As datatype] = startvalue To endvalue [Step stepvalue]

Accepted Answer

When the step value is positive in a For loop, the start value must be less than or equal to the end value for the loop to execute its instructions. This ensures that the counter will reach the end value through increments.

Question 19

In the following For clause, if you omit the stepvalue argument, a stepvalue of ____ is used. For counter [As datatype] = startvalue To endvalue [Step stepvalue]

Accepted Answer

If no stepvalue argument is provided, the For loop will use a stepvalue of 1 by default.

Question 20

In the following For clause, how many times will the computer count though the loop structure? For counter As numeric = 1 To 5 Step 1

Accepted Answer

The loop will run from 1 to 5, including both 1 and 5, so it will run 5 times.

Quiz 8: More on the Repetition Structure