chapter 2 cs180

___________ is a valid char value

'A'

in a c++ program _________ are used to separate special symbols, reserved words, and identifiers

whitespaces

the expressioin static_cast<int>(9.9) evaluates to

9

which of the following is the newline character

\n

suppose that alpha and beta are int variables and alpha = 5 and beta = 10. after the statement alpha *= beta executes

alpha = 50

suppose that alpha and beta are int variables. the statement alpha = beta++; is equivalent to the statements

alpha = beta; beta = beta + 1;

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

false

a comma is also a statement terminator

false

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

false

an operator that has only one operand is called a unique operator

false e

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

predefined

when a value of one data type is automatically changed to another data type ____________coercion is said to have occured

implicit

___________ is the process of planning and creating a program

programming

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

prompt lines

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, ____.

one = 10.5, two = 30.6

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

13

the length of the string "computer science" is __

16

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

2

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

3

the value of the expression 17 % 7 is ______

3

the memory allocated for a float value is _______ bytes

4

a ________ is a memory location whose contents can be changed

variable

an example of a floating point data type is

double

________ is a valid int value

46259

suppose that alpha and beta are int variables. the statement alpha = ++ beta; is equivalent to the statements

beta = beta + 1; alpha = beta;

suppose that alpha and beta are int variables. the statement alpha = --beta; is equivalent to the statement

beta = beta -1 alpha = beta

which of the following is a reserved word in c++

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 the key statements in a program

comments

the memory space for a __________ data value is 4 bytes

float and int

a ______ is a sequence of zero or more characters

string

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

alpha = beta; beta = beta - 1;

the ___________ type is c++ method for allowing programmers to create their own simple data types

enummeration

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

false

a ___________ is a collection of statements and when it is activated, or executed, it accomplishes something

function or subprogram

which of the following is a legal identifier

program_1

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 << endl; return 0; } insertion point 3 where does the include statement below

insertion point 1

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

int a,b,c;

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

named constant

the maximum number of significant digits is called the

precision

__________ 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 data type

suppose that sum and num are int variables and sum = 5 and num = 10. after the statement sum +=num executes

sum = 15

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

sunny day

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

syntax

smallest unit in a program in any language is

token

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

true

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

true

suppose we declare a variable is a sum as an int. the statement sum += 7 is equivalent to the statement sum = sum + 7

true

the maximum number of significant digits in float values is up to 6 to 7

true

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

true