Term	Definition
program	a set of instructions that you write to tell a computer what to do
Machine language	the most basic circuitry-level language
high-level programming language	allows you to use a vocabulary of reasonable terms, e.g. "read", "write", etc.
syntax	a languages set of rules
compiler	a computer program that translates high-level language statements into machine code
logic	involves executing the various statements and procedures in the correct order to produce the desired results
semantic errors	logical errors that occur when you use a correct word in the wrong context
debugging	the process of removing all syntax and logical errors from the program
procedural program	created by writing a series of steps or operations to manipulate values
variables	named computer memory locations that hold values that might vary
identifier	the name of a program component such as a variable, class, or method
camel casing	style of creating identifiers in which the first letter is not capitalized, but each new word is
Pascal casing	style of creating identifiers in which the first letter of all new words in a variable name, even the first one , is capitalized
procedures or methods	compartmentalized program units that accomplish tasks
calls or invokes	summons a procedures
object-oriented programming	a programming technique that features objects, classes, encapsulation, interfaces, polymorphism, and inheritance
objects	program elements that are instances of a class
command line	the line on which you type a command in a system that uses a text interface
command prompt	a request for input that appears at the beginning of the command line
attributes	represents an objects characteristics
states	the values of an objects attributes
properties	an objects values
state of an object	the collective value of all of an objects attributes at any point in time
class	a category of objects or a type of object
instance	the object of a class
encapsulation	the technique of packaging an object's attributes and methods into a cohesive unit that can be used as an undivided entity
black box	a device you use without regard for the internal mechanisms
interface	the interaction between a method and an object
polymorphism	the ability to create methods that act appropriately depending on the context
inheritance	the ability to extend a class so as to create a more specific class that contains all the attributes and methods of a more general class; the extended class usually contains new attributes or methods as well
C#	developed as an object-oriented and component-oriented language; exists as part of Visual Studio 2005, a package used for developing applications for the Windows family of operating systems
primitive data	simple data, such as a number
literal string	a series of characters that is used exactly as entered
argument or parameter	represents information that a method needs to perform its task; one is the expression used when you call a method; the other is an object or reference that is declared in a method definition -- where the method instructions are written
WriteLine() method	displays a line of output on the screen positions the cursor on the next line, and waits for additional output
Write() method	displays a line of output on the screen, but the cursor does not advance to a new line; it remains on the same line as the output
namespace	a scheme that provides a way to group similar classes
System namespace	is built into your C# compiler, holds commonly used classes
method header	includes the method name and information about what will pass into and be returned from a method
method body	is contained within a pair of curly braces and includes all the instructions executed by the method
whitespace	any combination of spaces, tabs, and carriage returns (blank lines); used to organize your program code and make it easier to read
keywords	predefined and reserved identifiers that have special meaning to the compiler
access modifier	defines the circumstances under which a method or class can be accessed; "public" is the most liberal type of access
public	an access modifier that indicates other classes may use the method
private	an access modifier that indicates other classes may not use the method
static	indicates that a method will be executed through a class and not by an object
void	indicates that the method does not return any value when called
verbatim identifier	has a @ prefix
program comments	nonexecuting statements that you add to document a program
comment out	the turning of a program statement into a comment so that the compiler will not execute its command
line comments	start with two forward slashes (//) and continue to the end of he cureent line; can appear on a line by themselves, or at the end of a line following executable code
block comments	start with a forward slash and an asterisk(/*) and end with an asterisk and a forward slash (*/); can appear on a line by themselves, on a line before executable code, or after executable code; can also extend across as many lines as needed
XML-documentation format comments	use a special set of tags within angle brackets to create documentation from within a program
using clause or using directive	used with a namespace
alias	an alternative name for a class
source code	the statements you write when you create a program
intermediate language (IL)	language into which source code statements are compiled
just in time (JIT)	a compiler which translates intermediate code into executable statements
string	a data type that can hold a series of characters