Question 1

In order for a C++ program to read data from a file,

Accepted Answer

A)  the file must already exist. 
B)  the program must define a file stream object that can "point to" (i.e., reference) the file. 
C)  the program must open the file. 
D)  All of the above are required. 
A)  the file must already exist. 
B)  the program must define a file stream object that can "point to" (i.e., reference) the file. 
C)  the program must open the file. 
D)  All of the above are required.

Question 2

A(n) ________ is a variable that controls the number of times a loop iterates.

Accepted Answer

A)  counter 
B)  accumulator 
C)  sentinel 
D)  total 
E)  loop control variable 
A)  counter 
B)  accumulator 
C)  sentinel 
D)  total 
E)  loop control variable

Question 3

What will the following code print?
Num = 8;
Cout << --num << " ";
Cout << num++ << " ";
Cout << num;

Accepted Answer

A)  7 7 8 
B)  7 8 8 
C)  8 7 7 
D)  8 7 8 
E)  None of these 
A)  7 7 8 
B)  7 8 8 
C)  8 7 7 
D)  8 7 8 
E)  None of these

Question 4

What will the following code print?
Num = 5;
Cout << num++ << " ";
Cout << num-- << " ";
Cout << --num;

Accepted Answer

A)  5 4 3 
B)  5 5 4 
C)  5 6 4 
D)  5 6 5 
E)  6 5 4 
A)  5 4 3 
B)  5 5 4 
C)  5 6 4 
D)  5 6 5 
E)  6 5 4

Question 5

The statements in the body of a do-while loop are executed

Accepted Answer

A)  only if the test condition is initially True. 
B)  at least once. 
C)  until the test condition becomes True. 
D)  until an exit statement is encountered. 
E)  forever until the user presses the break key. 
A)  only if the test condition is initially True. 
B)  at least once. 
C)  until the test condition becomes True. 
D)  until an exit statement is encountered. 
E)  forever until the user presses the break key.

Question 6

A while loop is somewhat limited because the counter can only be incremented or decremented by one each time through the loop.

Accepted Answer

A) True 
 B)False

Question 7

The while loop has two important parts: a condition that is tested and a statement or block of statements that is executed

Accepted Answer

A)  as long as the condition is True. 
B)  until the condition becomes True. 
C)  at least once. 
D)  exactly once. 
E)  Both A and C are True, but B and D are not. 
A)  as long as the condition is True. 
B)  until the condition becomes True. 
C)  at least once. 
D)  exactly once. 
E)  Both A and C are True, but B and D are not.

Question 8

The ideal type of loop to use for repeating a menu is a(n) ________ loop.

Accepted Answer

A)  do-while 
B)  for 
C)  sentinel controlled 
D)  infinite 
E)  nested 
A)  do-while 
B)  for 
C)  sentinel controlled 
D)  infinite 
E)  nested

Question 9

A(n) ________ is a special value that marks the end of a list of values.

Accepted Answer

A)  counter 
B)  accumulator 
C)  sentinel 
D)  total 
E)  loop control variable 
A)  counter 
B)  accumulator 
C)  sentinel 
D)  total 
E)  loop control variable

Question 10

The ideal type of loop to use if you want a user to enter exactly 20 values is a(n) ________ loop.

Accepted Answer

A)  do-while 
B)  for 
C)  sentinel controlled 
D)  infinite 
E)  nested 
A)  do-while 
B)  for 
C)  sentinel controlled 
D)  infinite 
E)  nested

Question 11

A sentinel is a special value that

Accepted Answer

A)  is used for data validation. 
B)  must be Boolean. 
C)  marks the end of a list of values. 
D)  must be a negative number. 
E)  is all of the above. 
A)  is used for data validation. 
B)  must be Boolean. 
C)  marks the end of a list of values. 
D)  must be a negative number. 
E)  is all of the above.

Question 12

To decrement a number means to increase its value.

Accepted Answer

A) True 
 B)False

Question 13

To ________ a value means to increase it.

Accepted Answer

A)  decrement 
B)  increment 
C)  add up 
D)  accumulate 
E)  total 
A)  decrement 
B)  increment 
C)  add up 
D)  accumulate 
E)  total

Question 14

If nothing within a while loop ever causes the condition to become false, a(n) ________ may occur.

Accepted Answer

A)  null value 
B)  infinite loop 
C)  unexpected exit 
D)  compiler error 
E)  system crash 
A)  null value 
B)  infinite loop 
C)  unexpected exit 
D)  compiler error 
E)  system crash

Question 15

For data validation, it is best to use a(n)

Accepted Answer

A)  if statement. 
B)  while loop. 
C)  for loop. 
D)  nested loop. 
E)  switch statement. 
A)  if statement. 
B)  while loop. 
C)  for loop. 
D)  nested loop. 
E)  switch statement.

Question 16

A variable that keeps a running total of data values is called a(n)

Accepted Answer

A)  total. 
B)  sum. 
C)  accumulator. 
D)  counter. 
E)  loop control variable. 
A)  total. 
B)  sum. 
C)  accumulator. 
D)  counter. 
E)  loop control variable.

Question 17

The ________ statement causes a loop to terminate early.

Accepted Answer

A)  stop 
B)  break 
C)  quit 
D)  terminate 
E)  continue 
A)  stop 
B)  break 
C)  quit 
D)  terminate 
E)  continue

Question 18

The block of code in the body of a while statement can contain an unlimited number of statements, provided they are enclosed in a set of braces.

Accepted Answer

A) True 
 B)False

Question 19

The while loop is a(n) ________ loop, whereas the do-while loop is a(n) ________ loop.

Accepted Answer

A)  finite, infinite 
B)  infinite, finite 
C)  simple, complex 
D)  pretest, post test 
E)  post test, pretest 
A)  finite, infinite 
B)  infinite, finite 
C)  simple, complex 
D)  pretest, post test 
E)  post test, pretest

Question 20

The ++ operator

Accepted Answer

A)  is a unary operator. 
B)  adds one to the value of its operand. 
C)  can operate in prefix or postfix mode. 
D)  All of the above. 
E)  Both B and C, but not A. 
A)  is a unary operator. 
B)  adds one to the value of its operand. 
C)  can operate in prefix or postfix mode. 
D)  All of the above. 
E)  Both B and C, but not A.

In order for a C++ program to read data from a file,

A(n) ________ is a variable that controls the number of times a loop iterates.

What will the following code print? Num = 8; Cout << --num << " "; Cout << num++ << " "; Cout << num;

What will the following code print? Num = 5; Cout << num++ << " "; Cout << num-- << " "; Cout << --num;

The statements in the body of a do-while loop are executed

A while loop is somewhat limited because the counter can only be incremented or decremented by one each time through the loop.

The while loop has two important parts: a condition that is tested and a statement or block of statements that is executed

The ideal type of loop to use for repeating a menu is a(n) ________ loop.

A(n) ________ is a special value that marks the end of a list of values.

The ideal type of loop to use if you want a user to enter exactly 20 values is a(n) ________ loop.

A sentinel is a special value that

To decrement a number means to increase its value.

To ________ a value means to increase it.

If nothing within a while loop ever causes the condition to become false, a(n) ________ may occur.

For data validation, it is best to use a(n)

A variable that keeps a running total of data values is called a(n)

The ________ statement causes a loop to terminate early.

The block of code in the body of a while statement can contain an unlimited number of statements, provided they are enclosed in a set of braces.

The while loop is a(n) loop, whereas the do-while loop is a(n) loop.

The ++ operator

Introduction to Computers and Programming

Introduction to C Plus Plus

Expressions and Interactivity

Making Decisions

Functions

Introduction to Classes and Objects

Arrays

Searching, Sorting, Algorithm Analysis

Pointers

More About Classes and Object-Oriented Programming

More on C-Strings and the String Class

Advanced File and Io Operations

Recursion

Polymorphism and Virtual Functions

Exceptions, Templates, and the Standard Template Library Stl

Linked Lists

Stacks and Queues

Binary Trees

Filters

Exam 5: Looping

In order for a C++ program to read data from a file,

A(n) ________ is a variable that controls the number of times a loop iterates.

What will the following code print? Num = 8; Cout << --num << " "; Cout << num++ << " "; Cout << num;

What will the following code print? Num = 5; Cout << num++ << " "; Cout << num-- << " "; Cout << --num;

The statements in the body of a do-while loop are executed

A while loop is somewhat limited because the counter can only be incremented or decremented by one each time through the loop.

The while loop has two important parts: a condition that is tested and a statement or block of statements that is executed

The ideal type of loop to use for repeating a menu is a(n) ________ loop.

A(n) ________ is a special value that marks the end of a list of values.

The ideal type of loop to use if you want a user to enter exactly 20 values is a(n) ________ loop.

A sentinel is a special value that

To decrement a number means to increase its value.

To ________ a value means to increase it.

If nothing within a while loop ever causes the condition to become false, a(n) ________ may occur.

For data validation, it is best to use a(n)

A variable that keeps a running total of data values is called a(n)

The ________ statement causes a loop to terminate early.

The block of code in the body of a while statement can contain an unlimited number of statements, provided they are enclosed in a set of braces.

The while loop is a(n) ________ loop, whereas the do-while loop is a(n) ________ loop.

The ++ operator

Introduction to Computers and Programming

Introduction to C Plus Plus

Expressions and Interactivity

Making Decisions

Functions

Introduction to Classes and Objects

Arrays

Searching, Sorting, Algorithm Analysis

Pointers

More About Classes and Object-Oriented Programming

More on C-Strings and the String Class

Advanced File and Io Operations

Recursion

Polymorphism and Virtual Functions

Exceptions, Templates, and the Standard Template Library Stl

Linked Lists

Stacks and Queues

Binary Trees

Filters

The while loop is a(n) loop, whereas the do-while loop is a(n) loop.