EGA (enhanced graphics adapter):A video adapter capable of displaying all the modes of the color graphics adapter (CGA) plus additional modes in medium resolution in up to 64 colors.
emulator:A floating-point-math package that provides software emulation for the operations of a math coprocessor.
environment :The integrated QuickC for Windows program-development application, which includes an editor, compiler, linker, resource compiler, and debugger.
environment variable:A variable stored in the environment table that provides DOS with information (where to find executable and library files, where to create temporary files, etc.).
escape character:A character that, when used immediately preceding a special character, causes the special character to lose its special meaning.
escape sequence:A specific combination of an escape character (often a backslash: \) followed by a character, keyword, or code. Escape sequences often represent white-space, nongraphic characters, or literal delimiters within strings and character constants.
.EXE:One of the extensions for an executable file, which is a file that can be loaded and executed by the operating system.
executable file:A program ready to be run by an operating system, usually with one of the extensions .EXE, .COM, .BAT, or .CMD.
expression:A combination of operands and operators that yields a single value.
extension:One, two, or three characters that appear after a period (.) following the base name in a filename. For example, DOC is the extension of the filename README.DOC. A filename does not necessarily have an extension. Sometimes the extension is considered to include the preceding period.
external level:The parts of a C program outside the function declarations.
external reference:A routine or data item declared in one module and referenced in another.