C++ Test pt.2

____ is a valid char value. a. "-129" b. 'A' c. "A" d. 129

'A'

____________________ is the process of planning and creating a program.

programming

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

white spaces

The expression static_cast<int>(9.9) evaluates to ____. a. 9 b. 10 c. 9.9 d. 9.0

9

Which of the following is the newline character? a. \r b. \n c. \l d. \b

\n

A mixed arithmetic expression contains all operands of the same type. a. True b. False

false

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

false

The escape sequence \r moves the insertion point to the beginning of the next line. a. True b. False

false

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

predefined

A comma is also called a statement terminator. a. True b. False

false

In C++, reserved words are the same as predefined identifiers. a. True b. False

false

____ are executable statements that inform the user what to do. a. Variables b. Prompt lines c. Named constants d. Expressions

prompt lines

____________________ rules determine the meaning of instructions.

semantic

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

simple

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

true

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

true

The maximum number of significant digits in values of the double type is 15. a. True b. False

true

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

variable

An example of a floating point data type is ____. a. int b. char c. double d. short

double

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

constant

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

syntax

The expression static_cast<int>(6.9) + static_cast<int>(7.9) evaluates to ____. a. 13 b. 14 c. 14.8 d. 15

13

The length of the string "computer science" is ____. a. 14 b. 15 c. 16 d. 18

16

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

true

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

2

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

true

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

alpha=50

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;

alpha=beta; beta=beta+1;

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;

alpha=beta; beta=beta-1;

The value of the expression 17 % 7 is ____. a. 1 b. 2 c. 3 d. 4

3

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

3

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

enumeration

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

a. Insertion Point 1

____ is a valid int value. a. 46,259 b. 46259 c. 462.59 d. -32.00

46259

Choose the output of the following C++ statement:cout << "Sunny " << '\n' << "Day " << endl; a. Sunny \nDay b. Sunny \nDay endl c. SunnyDay d. Sunny \nDay

SunnyDay

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;

beta=beta+1; alpha=beta;

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;

beta=beta-1; alpha=beta;

Which of the following is a reserved word in C++? a. char b. Char c. CHAR d. character

char

____________________ 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.

comments

The memory allocated for a float value is ____ bytes. a. two b. four c. eight d. sixteen

four

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

implicit

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;

int a,b,c;

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

long long

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

one=10.5, two=30.6

The maximum number of significant digits is called the ____________________.

precision

Which of the following is a legal identifier? a. program! b. program_1 c. 1program d. program 1

program_1

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

string

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

subprogram

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

sum=15

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

token