Deck 4: Performing Loops

Question 1

In the following segment of code,
Number = 1;
While(number
The body of the loop is ____.

A) empty
B) cout
C) cout
D) number

Answer 1

C

Question 2

The following loop will execute ____ time(s).
Number = 1;
While(number

A) 1
B) 9
C) 10
D) an infinite number of

Answer 2

D

Question 3

What common pitfall can you identify in the following segment of code?
Number = 1;
While(number

A) The programmer failed to initialize the loop control variable.
B) An unwanted semicolon was added.
C) The programmer forgot the curly braces.
D) It assumes C++ is case sensitive.

Answer 3

C

Question 4

A ____ loop is one that must execute a specific number of times.

A) while
B) do-while
C) definite
D) count-controlled

Question 5

If the expression in the while statement is true, the ____ executes, and the Boolean expression is tested again.

A) conditional expression
B) iterator
C) loop body
D) inner loop

Question 6

Many programmers recommend that you initialize every variable in your programs.

Question 7

The initialize portion of a for loop ____.

A) is mandatory
B) can appear in any order in the for statement
C) is separated by a comma from the evaluate portion
D) can contain multiple statements

Question 8

The initialize portion of a for loop comes after the evaluate portion.

Question 9

The segment of code shown below displays "Hello!" ____ times:
Int count;
Const int NUM_LOOPS = 5;
Count = 0;
While( count

A) 0
B) 4
C) 5
D) 6

Question 10

If a program runs for several seconds and appears to be doing nothing or produces repeated output, you should suspect an infinite loop.

Question 11

A loop body can be a single statement or a block of statements.

Question 12

If you fail to initialize a loop control variable, C++ will automatically assign a value of 0 to the variable.

Question 13

The do-while loop is a(n) ____ loop.

A) pretest
B) posttest
C) nested
D) inner

Question 14

The following loop will execute ____ time(s).
Number = 1;
While(number

A) 1
B) 9
C) 10
D) an infinite number of

Question 15

In the following segment of code,
Number = 1;
While(number
The body of the loop is ____.

A) empty
B) everything in between the curly brackets
C) cout
D) number

Question 16

What common pitfall can you identify in the following segment of code?
Number = 1;
While(number

A) The programmer failed to initialize the loop control variable.
B) An unwanted semicolon was added.
C) The programmer forgot the curly braces.
D) The programmer failed to alter the loop control variable.

Question 17

As a custom, many programmers use the variable names i and ____ as iterators.

A) a
B) e
C) j
D) x

Question 18

It is preferable to initialize loop control variables at the beginning of a program.

Question 19

In C++, a(n) ____ has an unknown value and is of no practical use.

A) garbage value
B) iterator
C) sentinel value
D) loop control variable

Question 20

What common pitfall can you identify in the following segment of code?
Int number;
While(number

A) The programmer failed to initialize the loop control variable.
B) An unwanted semicolon was added.
C) The programmer forgot the curly braces.
D) It assumes C++ is case sensitive.

Question 21

Most often the evaluate part of the for statement compares the loop control variable with a ____________________ or limit.

Question 22

What happens if you fail to initialize a loop control variable?

Question 23

A priming _________________________ is an input statement that initializes a variable before a loop begins.

Question 24

The while loop and the for loop are ____ loops.

A) pretest
B) posttest
C) nested
D) inner

Question 25

To create a loop that executes at least one time, you should use a ____ loop.

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

Question 26

When you write a loop, what actions must be taken with the loop control variable?

Question 27

A loop that completely contains another is a(n) ____ loop.

A) protecting
B) parent
C) covering
D) outer

Question 28

The body of a do-while loop executes ____.

A) zero or more times
B) at least one time
C) at most one time
D) any number of times

Question 29

A(n) ____________________ loop is one in which the loop control variable is tested after the loop body executes.

Question 30

In what situations would you typically use a loop?

Question 31

What types of variables should be initialized?

Question 32

What kind of C++ expression can be placed inside the parentheses in the while statement?

Question 33

When you place another loop within a loop, the loops are ____ loops.

A) inner
B) nested
C) inside
D) outer

Question 34

A loop that falls entirely within the body of another is a(n) ____ loop.

A) inner
B) child
C) restricted
D) connected

Question 35

What is a priming input statement?

Question 36

Totals are ____________________ by processing individual records one at a time in a loop and adding numeric data to a total.

Question 37

What types of mistakes are easy to make when working with loops?

Question 38

When should the loop control variable be initialized?

Question 39

In most C++ compilers you can stop an infinite loop from executing by pressing the Ctrl + ____________________ or Ctrl + Break keys.

Question 40

The most difficult aspect of working with ____ loops is keeping track of the separate loop control variables that direct the program's execution.

A) nested
B) count-controlled
C) outer
D) definite

Question 44

Write a program that projects sales goals for a salesperson for the next several years.The user should be prompted for a first year's merchandise sales amount and a number of years to project the goals. For the first year, the salesperson's goal is the current sales amount. After that, sales are projected to grow at a rate of 8 percent per year. You should use a do-while loop.

Question 45

Write a while loop equivalent to the following for loop:
int count;
for(count = 1; count