Chaster
9
I
Introduction to
BASIC
Keywords
Statements
A statement tells the computer to perform some operation. The
following is a brief description of all BASIC statements:
Statement Description
AUTO
BEEP
BLOAD
BSAVE
CALL
CALLS
CHAIN
CHDIR
CIRCLEiGraphics
CLEAR
CLOSE
CLS
COLORiGraphics
COLORiTex
t
COMiTrap
COMMON
CONT
DATA
DEFDBL
DEF FN
DEFINT
DEF SEG
DEFSNG
DEFSTR
DEF USR
DELETE
DIM
DRAWiGraphics
automatically generates line numbers.
produces
a
sound from the computer
speaker.
loads a memory image file from disk.
saves
a
memory image file to disk.
calls an assembly-language subroutine.
calls an MS-FORTRAN subroutine.
loads another program and passes varia-
bles to that program.
changes the current directory.
draws an ellipse on the screen.
frees
memory for data without erasing
the program in memory.
closes access to a disk file.
clears the screen.
selects background and either foreground
or palette depending on the screen mode.
selects foreground, background, and bor-
der display colors for Screen Mode
0.
enables communications event trapping.
passes variables to a chained program.
continues program execution.
stores data in your program
so
that you
can access
it
with a READ statement.
defines variables as double precision.
defines a function according to your
specifications.
defines variables
as
integers.
defines the current segment address.
defines variables as single precision.
defines variables as strings.
defines the offset
of
the entry point for
USR routines.
removes program lines from memory.
defines the dimensions of an array.
draws images on the screen.
87
To Next Page
Loading...
Need help?
General
