G
generic pointer
A pointer that can
point to any variable without restriction as to type of variable. A pointer
to storage without
regard to content.
Ghostscript
A PostscriptÔ-like interpreter that is freely available from the Free Software
Foundation.
global variables
Variables that are
known throughout an entire program.
guard digit
An extra digit of
precision used in floating-point calculations to ensure against loss of
accuracy.
H
header file
See include
file.
heap
A portion of memory
used by new to get space for the structures and classes returned by
new. Space is returned
to this pool by using the delete operator.
hexadecimal number
A base-16 number.
high-level language
A level of computer
language that is between machine language and natural (human)
language.
I
I/O manipulators
Functions that when
"output" or "input" cause no I/O, but set various
conversion flags or
parameters.
IEEE floating-point
standard
IEEE standard 754,
which standardizes floating-point format, precision, and certain
non-numerical values.
if
A statement that
allows selective execution of parts of a program based on the truth of a
condition.
implementation
dependence
The situation where
the result obtained from the operation of computer or software is not
standardized because
of variability among computer systems. A particular operation may
yield different
results when run on another system.
include file
A file that is merged
with source code by invocation of the preprocessor directive
#include.
Also called a header file.
Inclusive OR
See OR.
index
A value, variable, or
expression that selects a particular element of an array.
indirect operator
See de-referencing
operator.
information hiding
A code design system
that tries to minimize the amount of information passed between
modules. The idea is
to keep as much information as possible hidden inside the modules
and make information
public only if absolutely necessary.
instruction
A group of bits or
characters that defines an operation to be performed by the computer.
int
C++ keyword for
declaring an integer.
integer
A whole number.
interactive debugger
A program that aids
in the debugging of programs.
invert operator
A logical operator
that performs a NOT.
iostreamr.h
Standard C++ I/O
package.
L
left shift
The operation of
moving the bits in a bit field left by a specified amount and filling the
vacated positions with
zeros.
library
A collection of
files.
linked list
A collection of data
nodes. Each node consists of a value and a pointer to the next item in
the list.
local include files
Files from a private
library that can be inserted by the preprocessor at the directive
#include "filename".
local variable
A variable whose
scope is limited to the block in which it is declared.
logical AND
A Boolean operation
that returns true if its two arguments are both true. When used on
integers, each bit is
operated on separately.
logical operator
A C++ operator that
performs a logical operation on its two operands and returns a true or
a false value.
logical OR
A Boolean operation
that returns true if any one of its two arguments is true. When used on
integers, each bit is
operated on separately.
long
A qualifier to
specify a data type with longer than normal accuracy.
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