Computer Programing C++

Question 1

What is the address operator, which gives you the hexadecimal memory address of a variable (physical location in memory)?

	Exclamation point ( ! )
	Asterisk ( * )

	Ampersand ( & )
	Percent sign ( % )

Question 2

The statement string *ptrName = &name; has the same meaning as _____.

	string * ptrName = &name;
	string ptrName* = &name;

	*string ptrName = &name;
	string ptrName = *name;

Question 3

What does the following statement do? double *num2;

	It declares a double variable named num2.
	It declares and initializes a pointer variable named num2.

	It declares a pointer variable named num2.
	It initializes a variable named *num2.

Question 4

The delete operator cleans the memory that is located on the _____.

	stack
	heap

	binary triage
	ternary operator

Question 5

Which of the following statements is not valid C++ code?

	int* ptr = &num1;
	int ptr = *num1;

	float num1 = &ptr2;
	float* num1 = &ptr2;

Question 6

Which of the following statements deletes memory that has been dynamically allocated for an array?

	delete[] array;
	delete new array;

	delete dynamic array;
	delete array;

Question 7

If you have a pointer with a memory address, how do you get the content at that pointer location in memory?

	&ptrName
	ptrName&

	*ptrName
	%ptrName

Question 8

What does a pointer variable contain?

	Any legal C++ data type (e.g., int)
	A decimal memory address

	A binary memory address
	A hexadecimal memory address

Question 9

This data type can be used to create files, read data from them, and write data to them.

	ofstream
	fstream

	ifstream
	stream

Question 10

To access files from a C++ program, you must use this directive.

	#include
	#include

	#include
	#include

Question 11

This data type can be used to create files and read information from them into memory.

	ofstream
	istream

	ifstream
	instream

Question 12

When a file is opened, the file stream object's read position is _____.

	at the end of the file
	at the beginning of the file

	where the programmer positions it
	at the location where it existed when the file was last closed

Question 13

Objects are created from data types that encapsulate _____ and _____ together.

	numbers; text
	data; functions

	addresses; pointers
	integers; floats

Question 14

The _____ is used to protect important data.

	public access specifier
	private access specifier

	protect()member function
	data protection operator, @,

Question 15

The implementation code for the class methods are usually stored _____.

	on separate disk volumes
	in their own header files

	in .cpp files, separate from the class declarations or prototypes
	under pseudonyms

Question 16

A _____ is a member function that is automatically called when a class object is _____.

	destructor; created
	constructor; created

	static function; deallocated
	utility function; declared

Question 17

When a constructor accepts no arguments, it is called a(n) _____.

	parameterized constructor
	default constructor

	stand-alone constructor
	arbitrator constructor

Question 18

You can declare access specifiers for sections of your class, including private, protected, and public. If you do not declare an access specification, what is the default for a class?

	private
	protected

	public
	The application crashes because you must add an access specifier.

Question 19

To overload the - operator, you would write a function named _____.

	overload -
	operator -

	function -
	operator.overload(-)

Question 20

What is the prototype to overload the operator so this line works? Rectangle bigBox = smallBox1 + smallBox2;

	Rectangle operator+( const Rectangle & secondOne ) const;
	Rectangle operator+( int );

	Rectangle operator++( const Rectangle & secondOne ) const;
	Rectangle operator++( int );

Question 21

_____ allows us to create new classes based on existing classes.

	Polymorphism
	Inheritance

	Function overloading
	Composition

Question 22

A _____ of a base class expects to be overridden in a derived class.

	constructor function
	destructor function

	static function
	virtual function

Question 23

When member functions behave differently, depending upon which object performed the call, this is an example of _____.

	chaos theory
	virtual insubordination

	polymorphism
	encapsulation

Question 24

Abstract class references can be used in polymorphism if _____.

	all objects created in the abstract references are child (derived) objects
	all objects created in the abstract references use the new keyword

	all objects created in the abstract references are created on the memory stack
	It is not possible to use abstract class references in polymorphism.

Question 25

These are used to signal errors or unexpected events that occur while a program is running.

	Virtual functions
	Destructors

	Exceptions
	Templates

Question 26

In a function template, the programmer substitutes _____ for _____.

	parameters; data types
	parameters; arguments

	arguments; parameters
	angle brackets; parentheses

Question 27

Class templates allow you to create one general version of a class without having to _____.

	write any code
	use member functions

	use private members
	duplicate code to handle multiple data types

Question 28

The try block is immediately followed by one or more _____.

	errors
	error messages

	catch blocks
	throw blocks

Question 29

In the following statement, class Car : public Vehicle _____ is the derived (child) class.

	class
	Car

	public
	Vehicle

Question 30

_____ is commonly used to extend a class or to give it additional capabilities.

	Privacy
	Inheritance

	The constructor
	The destructor

Question 31

Write an Employee class that has data members for hourly pay rate and number of hours worked. The default constructor should set the hours worked and pay rate to zero. The class must have an accessor method for both the hours worked and rate of pay. The class must have mutator method for both the hours worked and rate of pay. Finally, the class should have a calculatePay method that returns the weekly pay based on the hours worked times the hourly pay rate.

Question 32

Demonstrate inheritance. Create an Airplane class with the following attributes: manufacturer : string speed : float Create a FigherPlane class that inherits from the Airplane class and adds the following attributes: numberOfMissiles : short

Question 33

Demonstrate a try-catch block for error handling. In the main method, get the number of kids for the person. If the person enters text (e.g., three), catch the exception, and tell the person about the error. Remember to reset the console input stream!

Question 34

Demonstrate composition. Create a HardDrive class with the following attributes. brand : string sizeInTB : float Create a Computer class with the following attributes. brand : string drive : HardDrive