QBasic 1.1: OPEN Statement

Explanation

OPEN Statement

Opens a file or device.

Worth knowing

Useful and cross-version information about the programming environments of QBasic, QuickBasic and Visual Basic for DOS.

ASCII Code Tables
Keyboard Scan Codes
Syntax Conventions
Screen Modes
Color Attributes
Error Codes

You are here: References Overview > QBasic 1.1 Commands List > OPEN Statement

Syntax

OPEN file$ [FOR mode] [ACCESS access] [lock] AS [#]filenumber% [LEN=reclen%]

Description / Parameter(s)

file$	The name of the file or device. The file name may include a drive and path.
mode	One of the following file modes: APPEND, BINARY, INPUT, OUTPUT, or RANDOM. See OPEN Statement File Modes.
access	In network environments, specifies whether the file is opened for READ, WRITE, or READ WRITE access. See OPEN Statement ACCESS Clause.
lock	Specifies the file locking in network environments: SHARED, LOCK READ, LOCK WRITE, LOCK READ WRITE.
filenumber%	A number in the range 1 through 255 that identifies the file while it is open.
reclen%	For random-access files, the record length (default is 128 bytes). For sequential files, the number of characters buffered (default is 512 bytes).

Example


INPUT "Enter Filename: "; n$
OPEN n$ FOR OUTPUT AS #1
PRINT #1, "This is saved to the file."
CLOSE
OPEN n$ FOR INPUT AS #1
INPUT #1, a$
PRINT "Read from file: "; a$
CLOSE