Deck 2: Basic Elements of C++

Question 1

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

Answer 1

False

Question 2

____ is a valid char value.

A) -129
B) 'A'
C) 128
D) 129

Answer 2

B

Question 3

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

Answer 3

True

Question 4

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

Question 5

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

Question 6

An example of a floating point data type is ____.

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

Question 7

The memory allocated for a float value is ____ bytes.

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

Question 8

Suppose that sum is an int variable.The statement sum += 7; is equivalent to the statement sum = sum + 7;

Question 9

The expression static_cast(9.9)evaluates to ____.

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

Question 10

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

Question 11

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

Question 12

____ is a valid int value.

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

Question 13

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

Question 14

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

Question 15

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

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

Question 16

The value of the expression 17 % 7 is ____.

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

Question 17

A comma is also called a statement terminator.

Question 18

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 19

Which of the following is a legal identifier?

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

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

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

Question 22

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

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

Question 23

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 24

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 25

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 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

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

Question 28

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 29

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

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

Question 30

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 31

Consider the following code. // Insertion Point 1
Using namespace std;
Const float PI = 3.14;
Int main()
{
//Insertion Point 2
Float r = 2.0;
Float area;
Area = PI * r * r;
Cout << "Area = " << area <Return 0;
}
// Insertion Point 3
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 32

____________________ rules determine the meaning of instructions.

Question 33

Which of the following is the newline character?

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

Question 34

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

Question 35

____________________ is the process of planning and creating a program.

Question 36

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

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

Question 37

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 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 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 40

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 41

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 42

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

Question 43

____________________ 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.

Question 44

The maximum number of significant digits is called the ____________________.

Question 45

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

Question 46

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

Question 47

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

Question 48

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

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

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