Deck 2: Introduction to C++

Question 1

_____________ represent storage locations in the computer's memory.

A) Literals
B) Variables
C) Comments
D) Integers
E) None of the above

Answer 1

B

Question 2

What is the output of the following statement? cout << 4 * (15 / (1 + 3)) << endl;

A) 15
B) 12
C) 63
D) 72
E) None of these

Answer 2

B

Question 3

A character literal is enclosed in ________ quotation marks, whereas a string literal is enclosed in ________ quotation marks.

A) double, single
B) triple, double
C) open, closed
D) single, double
E) None of the above

Answer 3

D

Question 4

The _____ causes the contents of another file to be inserted into a program.

A) Backslash
B) Pound sign
C) Semicolon
D) #include directive
E) None of the above

Question 5

Besides decimal, two other number systems you might encounter in C++ programs are:

A) Octal and Fractal
B) Hexadecimal and Octal
C) Unary and Quaternary
D) Base 7 and Base 9
E) None of the above

Question 6

Of the following, which is a valid C++ identifier?

A) June1997
B) _employee_number
C) ___department
D) myExtraLongVariableName
E) All of the above are valid identifiers.

Question 7

For every opening brace in a C++ program, there must be a:

A) String literal
B) Function
C) Variable
D) Closing brace
E) None of the above

Question 8

What is the modulus operator?

A) +
B) *
C) &
D) %
E) ||

Question 9

The ______ is/are used to display information on the computer's screen.

A) Opening and closing braces
B) Opening and closing quotation marks
C) cout object
D) Backslash
E) None of the above

Question 10

You must have a ___________ for every variable you intend to use in a program.

A) purpose
B) definition
C) comment
D) constant
E) None of the above

Question 11

These are data items whose values do not change while the program is running.

A) Literals
B) Variables
C) Comments
D) Integers
E) None of the above

Question 12

Which escape sequence causes the cursor to move to the beginning of the current line?

A) \n
B) \t
C) \a
D) \b
E) \r

Question 13

This is used to mark the end of a complete C++ programming statement.

A) Pound Sign
B) Semicolon
C) Data type
D) Void
E) None of the above

Question 14

In programming terms, a group of characters inside a set of quotation marks is called a:

A) String literal
B) Variable
C) Operation
D) Statement
E) None of the above

Question 15

In memory, C++ automatically places a ___________ at the end of string literals.

A) Semicolon
B) Quotation marks
C) Null terminator
D) Newline escape sequence
E) None of the above

Question 16

Which data type typically requires only one byte of storage?

A) short
B) int
C) float
D) char
E) double

Question 17

In a C++ program, two slash marks ( // ) indicate:

A) The end of a statement
B) The beginning of a comment
C) The end of the program
D) The beginning of a block of code
E) None of the above

Question 18

The numeric data types in C++ can be broken into two general categories:

A) numbers and characters
B) singles and doubles
C) integer and floating point
D) real and unreal
E) None of the above

Question 19

A statement that starts with a # is called a:

A) Comment
B) Function
C) Preprocessor directive
D) Key word
E) None of the above.

Question 20

Which character signifies the beginning of an escape sequence?

A) //
B) /
C) \
D) #
E) {

Question 21

What will the following code display? cout << "Monday";
Cout << "Tuesday";
Cout << "Wednesday";

A) Monday
Tuesday
Wednesday
B) Monday Tuesday Wednesday
C) MondayTuesdayWednesday
D) "Monday"
"Tuesday"
"Wednesday"

Question 22

Which one of the following would be an illegal variable name?

A) dayOfWeek
B) 3dGraph
C) _employee_num
D) June1997
E) itemsorderedforthemonth

Question 23

Character constants in C++ are always enclosed in ______.

A) [brackets]
B) "double quotation marks"
C) 'single quotation marks'
D) {braces}
E) (parentheses)

Question 24

What will the following code display? cout << "Four\n" << "score\n";
Cout << "and" << "\nseven";
Cout << "\nyears" << " ago" << endl;

A) Four
Score
And
Seven
Years ago
B) Four score and seven
Years ago
C) Four
Score
And seven
Years ago
D) Four score
And seven
Years ago

Question 25

What will the following code display? int number = 7;
Cout << "The number is " << "number" << endl;

A) The number is 7
B) The number is number
C) The number is7
D) The number is 0

Question 26

Every complete C++ program must have a _____________.

A) comment
B) function named main
C) preprocessor directive
D) symbolic constant
E) cout statement

Question 27

This control sequence is used to skip over to the next horizontal tab stop.

A) \n
B) \h
C) \t
D) \a
E) \'

Question 28

Which of the following defines a double-precision floating point variable named payCheck?

A) float payCheck;
B) double payCheck;
C) payCheck double;
D) Double payCheck;

Question 29

In the C++ instruction, cookies = number % children;
Given the following declaration statement:
Int number = 38, children = 4, cookies;
What is the value of cookies after the execution of the statement?

A) 2
B) 0
C) 9
D) .5
E) None of these

Question 30

A variable whose value can be either true or false is of this data type.

A) binary
B) bool
C) T/F
D) float
E) None of the above.

Question 31

A variable's ___________ is the part of the program that has access to the variable.

A) data Type
B) value
C) scope
D) reach
E) None of the above

Question 32

If you use a C++ key word as an identifier, your program will:

A) Execute with unpredictable results
B) not compile
C) understand the difference and run without problems
D) Compile, link, but not execute
E) None of the above

Question 33

Look at the following program and answer the question that follows it. Which line(s) in this program cause output to be displayed on the screen?

A) 13 and 14
B) 8 and 9
C) 14
D) 13
E) 15

Question 34

What will the following code display? cout << "Four " << "score ";
Cout << "and " << "seven/n";
Cout << "years" << "ago" << endl;

A) Four score and seven
Yearsago
B) Four score and seven
Years ago
C) Four score and seven/nyearsago
D) Four
Score
And
Seven
Yearsago

Question 35

How would you consolidate the following declaration statements into one statement? int x = 7;
Int y = 16;
Int z = 28;

A) int x = 7; y = 16; z = 28;
B) int x = 7 y = 16 z = 28;
C) int x, y, z = 7, 16, 28
D) int x = 7, y = 16, z = 28;
E) None of these will work

Question 36

These are used to declare variables that can hold real numbers.

A) Integer data types
B) Real data types
C) Floating point data types
D) Long data types
E) None of the above

Question 37

The float data type is considered _____ precision, and the double data type is considered _______ precision.

A) single, double
B) float, double
C) integer, double
D) short, long
E) None of the above

Question 38

____________ must be included in any program that uses the cout object.

A) Opening and closing braces
B) The header file iostream
C) Comments
D) Escape sequences
E) None of the above

Question 39

What will the following code display? int x = 0, y = 1, z = 2;
Cout << x << y << z << endl;

A) 0 1 2
B) 0
1
2
C) xyz
D) 012

Question 40

This function in C++ allows you to identify how many bytes of storage on your computer system an integer data value requires.

A) len
B) bytes
C) f(x)
D) int
E) sizeof

Question 41

The first step in using the string class is to #include the ___________ header file.

A) iostream
B) cctype
C) cmath
D) string
E) None of the above

Question 42

Escape sequences are always stored internally as a single character.

Question 43

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

Question 44

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

Question 45

What will the following code display? cout << "Four" << "score" << endl;
Cout << "and" << "seven" << endl;
Cout << "years" << "ago" << endl;

A) Four
Score
And
Seven
Years
Ago
B) Four score and seven years ago
C) Fourscoreandsevenyearsago
D) Fourscore
Andseven
Yearsago

Question 46

Floating point constants are normally stored in memory as doubles.

Question 47

A preprocessor directive does not require a semicolon at the end.

Question 48

What will the value of x be after the following statements execute? int x;
X = 18 % 4;

A) 0.45
B) 4
C) 2
D) unknown

Question 49

If you do not follow a consistent programming style, your programs will generate compiler errors.

Question 50

What will the value of x be after the following statements execute? int x;
X = 18 / 4;

A) 4.5
B) 4
C) 0
D) unknown

Question 51

The C++ language requires that you give variables names that indicate what the variables are used for.

Question 52

A variable called "average" should be declared as an integer data type because it will probably hold data that contains decimal places.

Question 53

Assuming you are using a system with 1-byte characters, how many bytes of memory will the following string literal occupy? "William"

A) 7
B) 14
C) 8
D) 1

Question 54

Assume that a program has the following string object definition: string name;
Which of the following statements correctly assigns a string literal to the string object?

A) name = Jane;
B) name = "Jane";
C) name = 'Jane';
D) name = (Jane);

Question 55

Assume that a program has the following variable definition: char letter;
Which of the following statements correctly assigns the character Z to the variable?

A) letter = Z;
B) letter = "Z";
C) letter = 'Z';
D) letter = (Z);

Question 56

What will the value of x be after the following statements execute? int x;
X = 18.0 / 4;

A) 4.5
B) 4
C) 0
D) unknown