Question 1

If you want a user to enter exactly 20 values, which loop would be the best to use?

Accepted Answer

A)  while 
B)  for 
C)  switch 
D)  do-while 
E)  None of these 
A)  while 
B)  for 
C)  switch 
D)  do-while 
E)  None of these

Question 2

To write read data from a file, you define an object of the __________ data type.

Accepted Answer

A)  inputFile 
B)  ifstream 
C)  fstream 
D)  ofstream 
A)  inputFile 
B)  ifstream 
C)  fstream 
D)  ofstream

Question 3

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

Accepted Answer

A) True 
 B)False

Question 4

Something within a while loop must eventually cause the condition to become False or a(n) __________ results.

Accepted Answer

A)  null value 
B)  infinite loop 
C)  unexpected exit 
D)  compiler error 
E)  None of these 
A)  null value 
B)  infinite loop 
C)  unexpected exit 
D)  compiler error 
E)  None of these

Question 5

You may define a __________ in the initialization expression of a for loop.

Accepted Answer

A)  constant 
B)  function 
C)  variable 
D)  new data type 
E)  None of these 
A)  constant 
B)  function 
C)  variable 
D)  new data type 
E)  None of these

Question 6

Assuming dataFile is a file stream object, the following statement:
DataFile.close();

Accepted Answer

A)  is illegal in C++ 
B)  needs a filename argument to execute correctly 
C)  closes a file 
D)  is legal but risks losing valuable data 
E)  None of these 
A)  is illegal in C++ 
B)  needs a filename argument to execute correctly 
C)  closes a file 
D)  is legal but risks losing valuable data 
E)  None of these

Question 7

What will the following code display?
Int number = 6;
Cout << number++ << endl;

Accepted Answer

A)  6 
B)  5 
C)  7 
D)  0 
A)  6 
B)  5 
C)  7 
D)  0

Question 8

The increment and decrement operators can be used in mathematical expressions; however, they cannot be used in relational expressions.

Accepted Answer

A) True 
 B)False

Question 9

A loop that is inside another loop is called a(n)

Accepted Answer

A)  infinite loop 
B)  pre-test loop 
C)  post-test loop 
D)  nested loop 
E)  None of these 
A)  infinite loop 
B)  pre-test loop 
C)  post-test loop 
D)  nested loop 
E)  None of these

Question 10

In C++ 11 you can pass a string object as an argument to a file stream object's open member function.

Accepted Answer

A) True 
 B)False

Question 11

The scope of a variable declared in a for loop's initialization expression always extends beyond the body of the loop.

Accepted Answer

A) True 
 B)False

Question 12

What will the following code display?
Int number = 6;
Cout << ++number << endl;

Accepted Answer

A)  6 
B)  5 
C)  7 
D)  0 
A)  6 
B)  5 
C)  7 
D)  0

Question 13

What will the following code display?
int number = 6;
++number;
cout << number << endl;

Accepted Answer

A)  6 
B)  5 
C)  7 
D)  0 
A)  6 
B)  5 
C)  7 
D)  0

Question 14

This is a control structure that causes a statement or group of statements to repeat.

Accepted Answer

A)  decision statement 
B)  loop 
C)  cout object 
D)  selection structure 
E)  None of these 
A)  decision statement 
B)  loop 
C)  cout object 
D)  selection structure 
E)  None of these

Question 15

The statements in the body of a while loop may never be executed while the statements in the body of a do-while loop will be executed

Accepted Answer

A)  at least once 
B)  at least twice 
C)  never 
D)  as many times as the user wishes 
E)  None of these 
A)  at least once 
B)  at least twice 
C)  never 
D)  as many times as the user wishes 
E)  None of these

Question 16

The condition that is tested by a while loop must be enclosed in parentheses and terminated with a semicolon.

Accepted Answer

A) True 
 B)False

Question 17

How many times will the following loop display "Looping!"?
For (int i = 20; i > 0; i--)
Cout << "Looping!" << endl;

Accepted Answer

A)  20 
B)  19 
C)  21 
D)  an infinite number of times 
A)  20 
B)  19 
C)  21 
D)  an infinite number of times

Question 18

To write information to a file, use the

Accepted Answer

A)  cout object 
B)  pen object 
C)  output object 
D)  stream insertion operator 
E)  None of these 
A)  cout object 
B)  pen object 
C)  output object 
D)  stream insertion operator 
E)  None of these

Question 19

In the following statement, which operator is used first?
While (x++ < 10)

Accepted Answer

A)  ++ 
B)  < 
C)  neither; the expression is invalid 
D)  cannot tell without the rest of the code 
A)  ++ 
B)  < 
C)  neither; the expression is invalid 
D)  cannot tell without the rest of the code

Question 20

A for statement contains three expressions:
Initialization, test, and

Accepted Answer

A)  update 
B)  reversal 
C)  null 
D)  validation 
E)  None of these 
A)  update 
B)  reversal 
C)  null 
D)  validation 
E)  None of these

Exam 5: Loops and Files

If you want a user to enter exactly 20 values, which loop would be the best to use?

To write read data from a file, you define an object of the __________ data type.

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

Something within a while loop must eventually cause the condition to become False or a(n) __________ results.

You may define a __________ in the initialization expression of a for loop.

Assuming dataFile is a file stream object, the following statement: DataFile.close();

What will the following code display? Int number = 6; Cout << number++ << endl;

The increment and decrement operators can be used in mathematical expressions; however, they cannot be used in relational expressions.

A loop that is inside another loop is called a(n)

In C++ 11 you can pass a string object as an argument to a file stream object's open member function.

The scope of a variable declared in a for loop's initialization expression always extends beyond the body of the loop.

What will the following code display? Int number = 6; Cout << ++number << endl;

What will the following code display? int number = 6; ++number; cout << number << endl;

This is a control structure that causes a statement or group of statements to repeat.

The statements in the body of a while loop may never be executed while the statements in the body of a do-while loop will be executed

The condition that is tested by a while loop must be enclosed in parentheses and terminated with a semicolon.

How many times will the following loop display "Looping!"? For (int i = 20; i > 0; i--) Cout << "Looping!" << endl;

To write information to a file, use the

In the following statement, which operator is used first? While (x++ < 10)

A for statement contains three expressions: Initialization, test, and

Introduction to Computers and Programming

Introduction to C

Expressions and Interactivity

Making Decisions

Functions

Arrays and Vectors

Searching and Sorting Arrays

Pointers

Characters, C-Strings, and More About the String Class

Structured Data

Advanced File Operations

Introduction to Classes

More About Classes

Inheritance, Polymorphism, and Virtual Functions

Exceptions and Templates

The Standard Template Library

Linked Lists

Stacks and Queues

Recursion

Binary Trees

Filters