Deck 2: Basic Elements of C++

Question 1

The maximum number of significant digits in values of the double type is 15.

Answer 1

True

Question 2

____ is a valid char value.

A) "-129"
B) 'A'
C) "A"
D) 129

Answer 2

B

Question 3

The memory allocated for a float value is ____ bytes.

A) two
B) four
C) eight
D) sixteen

Answer 3

B

Question 4

____ is a valid int value.

A) 46,259
B) 46259
C) 462.59
D) -32.00

Question 5

A mixed arithmetic expression contains all operands of the same type.

Question 6

In C++, reserved words are the same as predefined identifiers.

Question 7

Suppose a = 5. After the execution of the statement ++a; the value of a is 6.

Question 8

If a C++ arithmetic expression has no parentheses, operators are evaluated from left to right.

Question 9

The maximum number of significant digits in float values is up to 6 or 7.

Question 10

A comma is also called a statement terminator.

Question 11

Suppose we declare a variable sum as an int. The statement "sum += 7;" is equivalent to the statement "sum = sum + 7;".

Question 12

The escape sequence \r moves the insertion point to the beginning of the next line.

Question 13

The value of the expression 17 % 7 is ____.

A) 1
B) 2
C) 3
D) 4

Question 14

Which of the following is a reserved word in C++?

A) char
B) Char
C) CHAR
D) character

Question 15

Which of the following is a legal identifier?

A) program!
B) program_1
C) 1program
D) program 1

Question 16

The expression static_cast(9.9) evaluates to ____.

A) 9
B) 10
C) 9.9
D) 9.0

Question 17

The value of the expression 33/10, assuming both values are integral data types, is ____.

A) 0.3
B) 3
C) 3.0
D) 3.3

Question 18

An operator that has only one operand is called a unique operator.

Question 19

An example of a floating point data type is ____.

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

Question 20

The ____ rules of a programming language tell you which statements are legal, or accepted, by the programming language.

A) semantic
B) logical
C) syntax
D) grammatical

Question 21

The expression static_cast(6.9) + static_cast(7.9) evaluates to ____.

A) 13
B) 14
C) 14.8
D) 15

Question 22

Choose the output of the following C++ statement: cout << "Sunny " << '\n' << "Day " << endl;

A) Sunny \nDay
B) Sunny \nDay endl
C) Sunny
Day
D) Sunny \n
Day

Question 23

Consider the following code. In this code, where does the include statement belong?

A) Insertion Point 1
B) Insertion Point 2
C) Insertion Point 3
D) Anywhere in the program

Question 24

Which of the following is the newline character?

A) \r
B) \n
C) \l
D) \b

Question 25

The length of the string "computer science" is ____.

A) 14
B) 15
C) 16
D) 18

Question 26

Suppose that sum and num are int variables and sum = 5 and num = 10. After the statement sum += num executes, ____.

A) sum = 0
B) sum = 5
C) sum = 10
D) sum = 15

Question 27

The declaration int a, b, c; is equivalent to which of the following?

A) inta , b, c;
B) int a,b,c;
C) int abc;
D) int a b c;

Question 28

Suppose that alpha and beta are int variables. The statement alpha = beta++; is equivalent to the statement(s) ____.

A) alpha = 1 + beta;
B) alpha = alpha + beta;
C) alpha = beta;
Beta = beta + 1;
D) beta = beta + 1;
Alpha = beta;

Question 29

Suppose that alpha and beta are int variables. The statement alpha = beta--; is equivalent to the statement(s) ____.

A) alpha = 1 - beta;
B) alpha = beta - 1;
C) beta = beta - 1;
Alpha = beta;
D) alpha = beta;
Beta = beta - 1;

Question 30

Suppose that alpha and beta are int variables. The statement alpha = ++beta; is equivalent to the statement(s) ____.

A) beta = beta + 1;
Alpha = beta;
B) alpha = beta;
Beta = beta + 1;
C) alpha = alpha + beta;
D) alpha = beta + 1;

Question 31

____________________ rules determine the meaning of instructions.

Question 32

A(n) ____________________ is a memory location whose contents can be changed.

Question 33

In a C++ program, one and two are double variables and input values are 10.5 and 30.6. After the statement cin >> one >> two; executes, ____.

A) one = 10.5, two = 10.5
B) one = 10.5, two = 30.6
C) one = 30.6, two = 30.6
D) one = 11, two = 31

Question 34

____ are executable statements that inform the user what to do.

A) Variables
B) Prompt lines
C) Named constants
D) Expressions

Question 35

Suppose that alpha and beta are int variables and alpha = 5 and beta = 10. After the statement alpha *= beta; executes, ____.

A) alpha = 5
B) alpha = 10
C) alpha = 50
D) alpha = 50.0

Question 36

A(n) ____________________ is a collection of statements, and when it is activated, or executed, it accomplishes something.

Question 37

____________________ functions are those that have already been written and are provided as part of the system.

Question 38

Suppose that alpha and beta are int variables. The statement alpha = --beta; is equivalent to the statement(s) ____.

A) alpha = 1 - beta;
B) alpha = beta - 1;
C) beta = beta - 1;
Alpha = beta;
D) alpha = beta;
Beta = beta - 1;

Question 39

Suppose that count is an int variable and count = 1. After the statement count++; executes, the value of count is ____.

A) 1
B) 2
C) 3
D) 4

Question 40

____________________ is the process of planning and creating a program.

Question 41

When a value of one data type is automatically changed to another data type, a(n) ____________________ type coercion is said to have occurred.

Question 42

In C++, you can use a(n) ____________________ to instruct a program to mark those memory locations in which data is fixed throughout program execution.

Question 43

A(n) ____________________ is a sequence of zero or more characters.

Question 44

The maximum number of significant digits is called the ____________________.

Question 45

The memory space for a(n) ____________________ data value is 64 bytes.

Question 46

The smallest individual unit of a program written in any language is called a(n) ____________________.

Question 47

In a C++ program, ____________________ are used to separate special symbols, reserved words, and identifiers.

Question 48

The ____________________ type is C++ 's method for allowing programmers to create their own simple data types.

Question 49

A data type is called ____________________ if the variable or named constant of that type can store only one value at a time.

Question 50

____________________ can be used to identify the authors of the program, give the date when the program is written or modified, give a brief explanation of the program, and explain the meaning of key statements in a program.