Question 1

An initialization expression may be omitted from the for loop if no initialization is required.

Accepted Answer

True

Question 2

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

Accepted Answer

False

Question 3

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

Accepted Answer

False

Question 4

The update expression of a for loop can contain more than one statement, for example:
for(i = 5; i <= 10; i++, total+= sales)

Accepted Answer

True

Question 5

Multiple relational expressions cannot be placed into the test condition of a for loop.

Accepted Answer

True

Question 6

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

Accepted Answer

True

Question 7

string objects have a member function named c_str that returns the contents of the object formatted as a null-terminated C-string.

Accepted Answer

True

Question 8

The two important parts of a while loop are the expression that is tested for a true or false value and

Accepted Answer

a statement or block that is repeated as long as the expression is true

Question 9

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

Accepted Answer

infinite loop

Question 10

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

at least once

Question 11

A statement that may be used to stop a loop's current iteration and begin the next one is

Accepted Answer

continue

Question 12

A statement that causes a loop to terminate early is

Accepted Answer

break

Question 13

A special value that marks the end of a list of values is a

Accepted Answer

sentinel

Question 14

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

Accepted Answer

<

Question 15

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

Accepted Answer

6

Question 16

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

Accepted Answer

7

Question 17

In a for statement, this expression is executed only once:

Accepted Answer

initialization

Question 18

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

Accepted Answer

variable

Question 19

The do-while loop is considered

Accepted Answer

a post-test loop

Question 20

The ________ loop is ideal in situations where you want the loop to iterate at least once.

Accepted Answer

do-while

Question 21

The ________ loop is a good choice when you know how many times you want the loop to iterate in advance of entering the loop.

Accepted Answer

for

Question 22

The ________ loop is a good choice when you do not want the loop to iterate if the condition is FALSE in the beginning.

Accepted Answer

while

Question 23

You should be careful when using the equality operator to compare floating point values because of potential round-off errors.

Accepted Answer

True

Question 24

The following code correctly determines whether x contains a value in the range of 0 through 100, inclusive.
if (x > 0 && <= 100)

Accepted Answer

False

Question 25

What is assigned to the variable result given the statement below with the following assumptions: x = 10, y = 7, and x, result, and y are all int variables.
result = x >= y;

Accepted Answer

1

Question 26

Which of the following expressions will determine whether x is less than or equal to y?

Accepted Answer

x <= y

Question 27

These operators connect two or more relational expressions into one, or reverse the logic of an expression.

Accepted Answer

logical

Question 28

Without this statement appearing in a switch construct, the program "falls through" all of the statements below the one with the matching case expression.

Accepted Answer

break

Question 29

The default section of a switch statement performs a similar task similar to the ________ portion of an if/else if statement.

Accepted Answer

trailing else

Question 30

When a program lets the user know that an invalid choice has been made, this is known as:

Accepted Answer

input validation

Question 31

The only difference between the get function and the >> operator is that get reads the first character typed, even if it is a space, tab, or the [Enter] key.

Accepted Answer

True

Question 32

The cin << statement will stop reading input when it encounters a newline character.

Accepted Answer

True

Question 33

When C++ is working with an operator, it strives to convert the operands to the same type.

Accepted Answer

True

Question 34

Question 4
1 / 1 pts
The following statement will output $5.00 to the screen:
cout << setprecision(5) << dollars << endl;

Accepted Answer

False

Question 35

In C++, it is impossible to display the number 34.789 in a field of 9 spaces with 2 decimal places of precision.

Accepted Answer

False

Question 36

The ________ causes a program to wait until information is typed at the keyboard and the [Enter] key is pressed.

Accepted Answer

cin object

Question 37

Which of the following must be included in any program that uses the cin object?

Accepted Answer

the header file iostream

Question 38

Which of the following will allow the user to input the values 15 and 20 and have them stored in variables named base and height, respectively?

Accepted Answer

cin >> base >> height;

Question 39

What will be displayed after the following statements execute?
int num1 = 5;
int num2 = 3;
cout << "The result is " << (num1 * num2 + 10) << endl;

Accepted Answer

The result is 25

Question 40

What is the value of average after the following code executes?
double average;
average = 1.0 + 2.0 + 3.0 / 3.0;

Accepted Answer

4.0

Question 41

What is the value of cube after the following code executes?
double cube, side;
side = 5.0;
cube = pow(side, 3.0);

Accepted Answer

125.0

Question 42

When the final value of an expression is assigned to a variable, it will be converted to

Accepted Answer

the data type of the variable

Question 43

When a variable is assigned a number that is too large for its data type, it

Accepted Answer

overflows

Question 44

Which statement is equivalent to the following?
number += 1;

Accepted Answer

number = number + 1;

Question 45

This manipulator is used to establish a field width for the value that follows it:

Accepted Answer

setw

Question 46

You can control the number of significant digits in your output with the ________ manipulator.

Accepted Answer

setprecision

Question 47

What is TRUE about the following statement?
cout << setw(4) << num4 << " ";

Accepted Answer

It allows four spaces for the value in num4.

Question 48

Which of the following statements will pause the screen until the [Enter] key is pressed?

Accepted Answer

cin.get();

Question 49

Which of the following statements will allow the user to enter three values to be stored in variables length, width, and height, in that order?

Accepted Answer

cin.get(length, width, height);

Question 50

Which of the following functions tells the cin object to skip one or more characters in the keyboard buffer?

Accepted Answer

cin.ignore

Question 51

________ reads a line of input, including leading and embedded spaces, and stores it in a string object.

Accepted Answer

getline

Question 52

How many characters will the following statement read into the variable myString?
cin >> setw(10) >> myString;

Accepted Answer

9

Question 53

A debugging process where you, the programmer, pretend you are a computer and step through each statement while recording the value of each variable at each step is known as

Accepted Answer

hand tracing

Question 54

The preprocessor reads a program before it is compiled and only executes those lines beginning with # symbol.

Accepted Answer

True

Question 55

In programming, the terms "line" and "statement" always mean the same thing.

Accepted Answer

False

Question 56

In C++, key words are written in all lowercase letters.

Accepted Answer

True

Question 57

The preprocessor executes after the compiler.

Accepted Answer

False

Question 58

When typing your source code into the computer, you should be careful since most of your C++ instructions, header files, and variable names are case sensitive.

Accepted Answer

True

Question 59

In C++ you are required to name your variables so they indicate the purpose they will be used for.

Accepted Answer

False

Question 60

Floating point constants are normally stored in memory as doubles.

Accepted Answer

True

Question 61

C++ does not have a built-in data type for storing strings of data.

Accepted Answer

True

Question 62

A statement that starts with a hashtag (or pound) symbol (#) is called a

Accepted Answer

preprocessor directive

Question 63

In the following statement, the characters Hello! are a(n)
cout << "Hello!";

Accepted Answer

string literal

Question 64

Which of the following must be included in any program that uses the cout object?

Accepted Answer

the header file iostream

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