Deck 5: Looping

Question 1

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

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

Answer 1

C

Question 2

An indefinite loop is a loop that never stops.

Answer 2

False

Question 3

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

Answer 3

C

Question 4

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

Question 5

The loop control variable is initialized after entering the loop.

Question 6

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 7

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

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

Question 8

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 9

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

Question 10

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 11

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 12

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

Question 13

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

Question 14

You can either increment or decrement the loop control variable.

Question 15

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

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

Question 16

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 17

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

Question 18

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

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

Question 19

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

Question 20

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

Question 21

A posttest loop is sometimes called a ____________________ loop.

Question 22

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

Question 23

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 24

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

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

Question 25

To add to a variable is to ____________________ the variable.

Question 26

____ 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 27

You usually use the for loop with ____ loops.

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

Question 28

____ 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 29

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

Question 30

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 31

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 32

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

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

Question 33

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 34

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

Question 35

The ____ loop is particularly useful when processing arrays.

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

Question 36

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 37

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 38

The ____ loop provides three actions in one compact statement.

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

Question 39

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 40

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 41

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

Question 42

Match each term with a statement below.


-To add to a variable

A)indefinite
B)loop control variable
C)nested loops
D)counter
E)increment
F)decrement
G)accumulator
H)loop
I)step value
J)forcing

Question 43

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

Question 44

What are common mistakes made by programmers in coding loops?

Question 45

How might user data be validated?

Question 46

Match each term with a statement below.


-The amount by which a for loop control variable changes

A)indefinite
B)loop control variable
C)nested loops
D)counter
E)increment
F)decrement
G)accumulator
H)loop
I)step value
J)forcing

Question 47

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

Question 48

What is an accumulator?

Question 49

Match each term with a statement below.


-To override incorrect data by setting the variable to a specific,predetermined value

A)indefinite
B)loop control variable
C)nested loops
D)counter
E)increment
F)decrement
G)accumulator
H)loop
I)step value
J)forcing

Question 50

Match each term with a statement below.


-Any numeric variable you use to count the number of times an event has occurred

A)indefinite
B)loop control variable
C)nested loops
D)counter
E)increment
F)decrement
G)accumulator
H)loop
I)step value
J)forcing

Question 51

What is a step value?

Question 52

Match each term with a statement below.


-One set of instructions that operates on multiple,separate sets of data

A)indefinite
B)loop control variable
C)nested loops
D)counter
E)increment
F)decrement
G)accumulator
H)loop
I)step value
J)forcing

Question 53

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

Question 54

Match each term with a statement below.


-A variable that you use to gather values

A)indefinite
B)loop control variable
C)nested loops
D)counter
E)increment
F)decrement
G)accumulator
H)loop
I)step value
J)forcing

Question 55

Match each term with a statement below.


-A loop that may execute a different number of times each time the program executes

A)indefinite
B)loop control variable
C)nested loops
D)counter
E)increment
F)decrement
G)accumulator
H)loop
I)step value
J)forcing

Question 56

What is an advantage of using fewer instructions?

Question 57

Match each term with a statement below.


-To decrease a variable's value

A)indefinite
B)loop control variable
C)nested loops
D)counter
E)increment
F)decrement
G)accumulator
H)loop
I)step value
J)forcing

Question 58

Match each term with a statement below.


-Loops within loops

A)indefinite
B)loop control variable
C)nested loops
D)counter
E)increment
F)decrement
G)accumulator
H)loop
I)step value
J)forcing

Question 59

Match each term with a statement below.


-Initialized before entering a while loop

A)indefinite
B)loop control variable
C)nested loops
D)counter
E)increment
F)decrement
G)accumulator
H)loop
I)step value
J)forcing