Deck 5: Looping

Question 1

You can either increment or decrement the loop control variable.

Answer 1

True

Question 2

Every high-level computer programming language contains a while statement.

Answer 2

True

Question 3

The loop control variable is initialized after entering the loop.

Answer 3

False

Question 4

Both the while loop and the for loop are examples of pretest loops.

Question 5

It is the programmer's responsibility to initialize all variables that must start with a specific value.

Question 6

A mistake programmers often make with loops is that they ____.

A)initialize the loop control variable prior to entering the loop body
B)increment the loop control variable inside of the loop body
C)include statements inside the loop that belong outside the loop
D)enclose the inner loop entirely within the outer loop in a nested loop

Question 7

A loop within another loop is known as a(n)____ loop.

A)indefinite
B)infinite
C)nested
D)hidden

Question 8

An indefinite loop is a loop that never stops.

Question 9

Forgetting to initialize and alter the loop control variable are common mistakes that programmers sometimes make.

Question 10

Usually, when you create nested loops, each loop has its own ____.

A)sentinel value
B)goto statement
C)entrance condition
D)loop control variable

Question 11

Once your logic enters the body of a structured loop, ____.

A)the entire loop must execute
B)the loop can be terminated with a break statement
C)the loop will execute indefinitely
D)a decision statement will be evaluated

Question 12

When one loop appears inside another, the loop that contains the other loop is called the ____ loop.

A)indefinite
B)definite
C)inner
D)outer

Question 13

The safest action is to assign the value 1 to accumulators before using them.

Question 14

The first step in a while loop is typically to ____.

A)compare the loop control variable to a constant value
B)initialize the loop control variable
C)increment the loop control variable
D)execute the body of the loop

Question 15

A(n)____ is any numeric variable you use to count the number of times an event has occurred.

A)accumulator
B)key
C)index
D)counter

Question 16

A(n)____ loop executes a predetermined number of times.

A)terminal
B)definite
C)indefinite
D)infinite

Question 17

When one loop appears inside another is is called an indented loop.

Question 18

Use a counter or a(n)____ to control a loop's repetitions.

A)sentinel variable
B)end value
C)sentinel value
D)end statement

Question 19

In some cases, a loop control variable does not have to be initialized.

Question 20

Many loop control variable values are altered by ____, or adding to them.

A)incrementing
B)decrementing
C)accumulating
D)deprecating

Question 21

In a ____, the loop body might never execute because the question controlling the loop might be false the first time it is asked.

A)summary report
B)pretest loop
C)posttest loop
D)loop control

Question 22

The ____ loop provides three actions in one compact statement.

A)for
B)while
C)do until
D)repeat

Question 23

You usually use the for loop with ____ loops.

A)indefinite
B)definite
C)inner
D)outer

Question 24

____ is a technique with which you try to prepare for all possible errors before they occur.

A)Incrementing
B)Stub
C)Nested loop
D)Defensive programming

Question 25

____________________ can ensure that a value is the correct data type or that it falls within an acceptable range.

Question 26

The ____ loop is particularly useful when processing arrays.

A)for
B)while
C)infinite
D)nested

Question 27

Programmers use the term ____ to describe programs that are well designed and easy to understand and maintain.

A)industrial
B)intractable
C)well behaved
D)elegant

Question 28

The amount by which a for loop control variable changes is often called a ____ value.

A)group
B)key
C)step
D)sentinel

Question 29

____ a data item means you override incorrect data by setting the variable to a specific value.

A)Flexing
B)Tracing
C)Forcing
D)Blanking

Question 30

A(n)____ is very similar to a counter that you use to count loop iterations, except that you usually add a value other than one to this type of variable.

A)transaction
B)total
C)validator
D)accumulator

Question 31

In a for statement, a loop control variable is initialized, tested, and ____________________.

Question 32

A mistake programmers often make with loops is that they ____.

A)neglect to initialize the loop control variable prior to entering the loop body
B)increment the loop control variable inside of the loop body
C)validate data to ensure values are the correct data type or that they fall within an acceptable range
D)enclose the inner loop entirely within the outer loop in a nested loop

Question 33

To add to a variable is to ____________________ the variable.

Question 34

In a ____, the loop body executes at least one time because the loop control variable is not tested until after one iteration.

A)nested loop
B)pretest loop
C)posttest loop
D)loop control

Question 35

Business reports that list only totals, with no individual item details, are called ____.

A)detail reports
B)summary reports
C)transaction reports
D)control-break reports

Question 36

____________________ are frequently used to accumulate totals and to validate data.

Question 37

Loops are frequently used to ____; that is, to make sure it is meaningful and useful.

A)validate data
B)restructure data
C)simulate data
D)corroborate data

Question 38

A comparison is correct only when the correct ____ and operator are used.

A)expression
B)operands
C)statements
D)index

Question 39

Programmers employ the acronym ____ to mean that if your input is incorrect, your output is worthless.

A)IBOW
B)GIGO
C)IIOW
D)GIGS

Question 40

A posttest loop is sometimes called a ____________________ loop.

Question 41

What is a step value?

Question 44

What are the tasks performed by the for count = 0 to 3 statement?

Question 45

Explain when it would be appropriate to write an indefinite loop.

Question 46

What is the difference between a definite loop and an indefinite loop?

Question 48

How might user data be validated?

Question 49

When are you required to use a for statement, and what are the advantages of for statements?

Question 50

What are the three steps that should occur in every loop?

Question 52

What are common mistakes made by programmers in coding loops?

Question 54

What is an accumulator?

Question 55

What is an advantage of using fewer instructions?