Test questions Flashcards by eryn no

[T/F]

A CPU really only understands instructions that are written in machine language

True

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[T/F]
Software engineering is a field that encompasses designing, writing, testing, debugging, documenting, modifying, and maintaining computer programs

True

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[T/F]

Machine language is an example of a high-level language

False

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[T/F]

In programming, the terms “line” and “statement” always mean the same thing

False

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[T/F]

Pseudocode is a form of program statement that will always evaluate to “false”

False

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[T/F]

Escape sequences are always stored internally as a single character

True

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[T/F]

The cin &laquo_space;statement will stop reading input when it encounters a newline character

true

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[T/F]

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

False

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[T/F]

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

false

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[T/F]

When a program uses the setw manipulator, the iosetwidth header file must be included in a preprocessor directive

False

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[T/F]

The preprocessor executes after the compiler

False

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[T/F]

Floating point constants are normally stored in memory as doubles

True

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[T/F]
When the fixed manipulator is used, the value specified by the setprecision manipulator will be the number of digits to appear after the decimal point.

True

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[T/F]

In c++, key words are written in all lowercase letters.

True

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[T/F]
A variable called “average” should be declared should be declared as an integer data type because it will probably hold data that contains decimal points

False

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You want the user to enter the length, width, and height from the keyboard. What would be the correct cin statement?

cin.get(length, width, height)

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This term refers to the programmer reading the program from the beginning and stepping through each statement

desk checking

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This is a set of rules that must be followed when constructing a program

syntax

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In a broad sense, the two primary categories of programming languages are:

low-level and high-level

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An integrated Development Environment typically consists of:

a text editor, a debugger, and a compiler

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What will the following code display:

int number = 7;
cout &laquo_space;“The number is “ &laquo_space;“number” &laquo_space;endl;

The number is number

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The _____ causes a program to wait until information is typed at the keyboard and the enter key is presses

cin object

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During which stage does the central processing unit retrieve from main memory the next instruction in the sequence of program instructions?

fetch

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The purpose of a memory address is:

To identify the location of a byte in memory

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In the following C++ statement, what will be executed first according to the order of precedence? 6 - 3 * 2 + 7 - 10 / 2

3 * 2

Internally, the CPU consists of two parts:

the control unit and the arithmetic and logic unit

This is used in a program to mark the beginning or ending of a statement, or separate items in a list

punctuation

Mistakes that cause a running program to produce incorrect results are called:

logic errors

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

bool

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

4.5

This is a volatile type of memory, used for temporary storage.

RAM

Three primary activities of a program are:

input, processing, and output

To use the rand( ) function, you must #include this header file in your program

cstdlib

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

null terminator

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

scope

In the process of translating a source file into an executable file, what is the correct sequence?

``` source code, preprocessor, modified source code, compiler, object code, linker, executable code ```

This is a complete instruction that causes the computer to perform some action:

statement

The function, pow(x, 5.0), requires this header file:

cmath

This stream manipulator forces cout to print the digits in fixed-point notation:

fixed

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

int x = 7, y = 16, z = 28;

Computer programs are also known as :

software

The name for a memory location that may hold data is :

variable

``` Which line in the following program will cause a compiler error? 1 #include 2 using namespace std; 3 4 int main( ) 5 { 6 const int MY_VAL; 7 MY_VAL = 77; 8 cout ```

This manipulator causes the field to be left - justified with padding spaces printed to the right:

left

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

literals

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

definition

Describe an operator

an operator allows you to perform operations on one or more pieces of data

[T/F] | If the sub-expression on the left side of the || operator is true, the expression on the right side will not be checked

True

[T/F] | 12.5 could be a valid constant for a switch statement

False

[T/F] | An expression that has any value other than 0 has a boolean value of true

true

[T/F] | A for loop is somewhat limited, because the counter can only be incremented by one each time through the loop

False

[T/F] | An initialization expression may be omitted from the for loop if no initialization is required

True

[T/F] | You may not use the break and continue statements within the same set of nested loops

False

[T/F] | It is possible to define a file stream object and open a file in one statement.

True

[T/F] | A parameter is a special-purpose variable that is declared inside the parentheses of a function header.

True

[T/F] | A function's return data type must be the same as the function's parameter(s).

False

Relational operators allow you to ______ numbers.

Compare

When a relational operator is false, it has the value ______.

zero

When an if statement is placed within the conditionally- executed code of another if statement, this is known as:

nesting

This operator takes an operand and reverses its truth or falsehood:

This statement lets the value of a variable or expression determine where the program will branch to:

switch

The ______ of a variable is limited to the block in which it is declared

scope

The operand of an increment operator can be:

an Ivalue

This operator increments the value of its operand, then uses the value in context

prefix increment

a for statement contains three expressions: initialization, test, and

incrementation

To allow file access in a program, you must #include this header file.

fstream

This statement may be used to stop a loop's current iteration and begin the next one:

continue

To allow file access in a program, you must #include this header file:

fstream

To write data to a file, you define an object of this data type:

ofstream

This is a collection of statements that performs a specific task:

function

A function _____ contains the statements that make up the function

definition

A function can have zero to many parameters, and it can return this many values:

only one

The default section of a switch statement performs a similar task as the ______ portion of an if/else if statement

trailing else

[T/F] | A local variable and a global variable may not have the same name within the same program

false

[T/F] | Local variables are initialized to zero by default

False

[T/F] Assume array1 and array2 are the names of arrays. To assign the contents of array2 to array1, you would use the following statement: array1 = array2;

False

[T/F] | If you attempt to store data past an array's boundaries, it is guaranteed that the compiler will issue an error

False

[T/F] | The bubble sort is an easy way to arrange data into ascending order, but it cannot arrange data into descending order

False

[T/F] In the average case, an item is just as likely to be found near the beginning of an array as near the end, if data is unsorted

True

[T/F] C++ does not perform array bounds checking, making it possible for you to assign a pointer the address of an element out of the boundaries of an array

True

Unlike regular variables, these can hold multiple values

vectors and arrays

The individual values contained in arrays are known as:

elements

The statement int grades [ ] = { 100, 90, 99, 80}; shows an example of:

implicit array sizing

The name of an array stores the ______ of the first array element

memory address

A two-dimensional array can be viewed as ______ and _______.

rows, columns

If you leave out the size declarator in an array definition:

You must furnish an initialization list

When writing function that accept multi-dimensional arrays as arguments, _____ must be explicitly stated in the parameter list

all but the first dimension

An array's size declarator must be a(n) ______ with a value greater than ______.

constant integer expression, zero

Arrays must be ______ at the time they are ______

initialized, declared

A ______ algorithm is a method of locating a specific item of information in a larger collection of data

The advantage of a linear search is :

simplicity

The ______ sort usually performs fewer exchanges than the ______.

selection, bubble

A two-dimensional array can have elements of ______ data type(s)

one

The ______ is automatically appended to a character array when it is initialized with a string constant

null terminator

an array with no elements is:

Illegal in C++

It is ______ to pass an argument to a function that is an individual array element, such as numbers[3].

legal in C++

With pointer variables, you can ______ manipulate data stored in other variables

indirectly

When you work with a dereferenced pointer, you are actually working with:

The actual value of the variable whose address is stored in the pointer variable

A pointer may be initialized with:

the address of an existing object

When the less than operator ( < ) is used between two pointer variables, the expression is testing whether:

the address of the first variable comes before the address of the second variable in the computers memory

What is true of global variables?

A global variable can have the same name as a variable that is declared locally within a function