Deck 4: Looping

Question 1

When you do not know when you write the program whether the loop will be executed two times,200 times,or not at all you should use a definite loop.

Answer 1

False

Question 2

Commonly,you control a loop's repetitions by using either a counter or a ____ value.

A) flag
B) keystone
C) control
D) sentinel

Answer 2

D

Question 3

All programming languages assign 0 to a variable you fail to initialize explicitly.

Answer 3

False

Question 4

The decision that controls every loop is always based on a ____ expression.

A) Boolean
B) numeric
C) conditional
D) contrived

Question 5

Just as with a selection,the Boolean comparison that controls a while loop must compare same-type values.

Question 6

If a data item is valid,you can assume that it is also correct.

Question 7

When a loop control variable is numeric,its value is often altered by ____ it,or adding to it.

A) decrementing
B) indicating
C) incrementing
D) increasing

Question 8

The number of times a loop executes should always depend on a constant.

Question 9

It is always a mistake to fail to initialize a loop's control variable.

Question 10

A ____ is the structure that repeats actions while some condition continues.

A) decision
B) loop
C) branch
D) block

Question 11

You can use any of the ____ comparison operators to control a loop.

A) three
B) four
C) five
D) six

Question 12

Most languages provide a built-in way to check whether a value that is entered is numeric or not.

Question 13

An accumulator is the same thing as a counter that you use to count loop iterations.

Question 14

While making decisions is what makes computers seem intelligent,it's looping that makes computer programming both efficient and worthwhile.

Question 15

A loop for which the number of iterations is predetermined is called a(n)____ loop,or counted loop.

A) infinite
B) definite
C) optimal
D) defined

Question 16

Once your logic enters the body of a structured loop,you can exit the loop body early if you program it correctly.

Question 17

When you write a loop,you must control the number of repetitions it performs; if you do not,you run the risk of creating a(n)____ loop.

A) final
B) infinite
C) unbreakable
D) permanent

Question 18

As long as a Boolean expression remains true,a ____ loop's body executes.

A) do
B) go
C) while
D) begin

Question 19

Some loops are controlled by reducing,or ____.

A) decrementing
B) incrementing
C) indicating
D) compensating

Question 20

When you use a ____ within a computer program,you can write one set of instructions that operates on multiple,separate sets of data.

A) counter
B) variable
C) loop
D) sentinel

Question 21

Many programs are not run at the command prompt in a text environment,but are run using a ____,which allows users to interact with a program in a graphical environment.

A) UML
B) GOOY
C) GUM
D) GUI

Question 22

Program logic gets more complicated when you must use loops within loops,creating ____ loops.

A) interwoven
B) stacked
C) nested
D) connected

Question 23

When one loop is nested within another,the loop that is contained is the ____ loop.

A) outer
B) inner
C) controlling
D) bounding

Question 24

Loops are frequently used to ____ data; that is,to make sure values fall within an acceptable or reasonable range.

A) validate
B) enter
C) add
D) manipulate

Question 25

When one loop is nested within another,the containing loop is the ____ loop.

A) inner
B) controlling
C) bounding
D) outer

Question 26

The ____ statement uses a loop control variable and provides you with three actions automatically in one compact statement: initialization,evaluation and incrementation.

A) do
B) while
C) for
D) count

Question 27

A(n)____ value is a number you use to increase a loop control variable on each pass through a loop.

A) jump
B) bump
C) increment
D) step

Question 28

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

A) simple
B) complex
C) elegant
D) classic

Question 29

Many programmers prefer starting their counted loops with a variable containing a(n)____ value.

A) 0
B) 1
C) arbitrary
D) constant

Question 30

A value such as "Y" or "N" that a user must supply to stop a loop is called a(n)____ value.

A) flag
B) sentinel
C) indicator
D) overlook

Question 31

To indicate end-of-file,use the ____ indicator.

A) endfile
B) End-of-File
C) Control-z
D) eof

Question 32

Often,the value of a loop control variable is not altered by arithmetic,but instead is altered by ____.

A) infinite loops
B) machine input
C) user input
D) the loop

Question 33

Business reports that list no individual detail records,just totals,are called ____ reports.

A) overall
B) summary
C) executive
D) roll-up

Question 34

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

A) accumulator
B) holder
C) scratchpad
D) counter

Question 35

A(n)____ is a variable that you use to gather or accumulate values.

A) indicator
B) holder
C) accumulator
D) aggregator

Question 36

The ____ is the location on your computer screen at which you type entries to communicate with the computer's operating system using text.

A) command prompt
B) command shell
C) input prompt
D) run prompt

Question 37

Which of the following is NOT a mistake that programmers commonly make with loops?

A) Neglecting to initialize the loop control variable
B) Using the wrong comparison with the loop control variable
C) Neglecting to alter the loop control variable
D) Including statements outside the loop that belong inside the loop

Question 38

With a ____ loop,the loop body executes once before the loop-controlling condition is tested.

A) do-while
B) while
C) do
D) for

Question 39

Reports that include some output for every input record are ____ reports.

A) summary
B) detail
C) executive
D) running total

Question 40

Every high-level computer programming language contains a ____ statement that you can use to code any loop,including both indefinite and definite loops.

A) do
B) while
C) for
D) count

Question 41

The following pseudocode is not working properly.The message should display five times.This is not working because the programmer made which common loop mistake? Declarations
Num count
String message = "OK"
While count < 5
Output message
Count = count + 1
Endwhile

A) Neglecting to initialize the loop control variable
B) Neglecting to alter the loop control variable
C) Using the wrong comparison with the loop control variable
D) Including statements inside the loop that belong outside the loop

Question 42

Using a while loop,write the pseudocode to display "I love programming!" five times.

Question 43

The following pseudocode is not working properly.The message should display five times.What needs to be changed? Declarations
String message = "OK"
While count < 5
Output message
Count = count + 1
Endwhile

A) while count < 5 should be changed to while count = 5
B) num count = 1 should be added to the Declarations
C) num count should be added to the Declarations
D) num count = 0 should be added to the Declarations

Question 44

In the following pseudocode,what will be the value of sum after the code is run? Declarations
Num count = 0
Num sum = 0
While count < 3
For X = 1 to 2 step 1
Sum = sum + X
Endfor
Count = count + 1
Endwhile

A) 3
B) 6
C) 9
D) 12

Question 45

The following pseudocode is not working properly.The message should display 10 times.What needs to be changed? for count = 0 to 10
Output "I love programming!"
Endfor

A) The for statement should be:
For count = 0 to 9
B) The for statement should be:
For count = 0 to 9 step 1
C) The for statement should be:
For count = 0 to 10 step 1
D) The for statement should be:
For count = 0 to 8 step 1

Question 46

Name the three crucial steps that must occur in every loop.

Question 47

The following pseudocode is not working properly.The message should display 10 times.This is not working because the programmer made which common loop mistake? for count = 1 to 10
Output "Hello"
Endfor

A) Neglecting to initialize the loop control variable
B) Neglecting to alter the loop control variable
C) Using the wrong comparison with the loop control variable
D) Including statements inside the loop that belong outside the loop

Question 48

Using a for loop,write the pseudocode to display "I love programming!" five times.

Question 49

Write the logic for a program that outputs every even number from 2 through 16.

Question 50

Name three common mistakes that programmers make when programming with loops.