Apple IIe - Page 217

Cassette and Disk Storage with the Apple lie 217
The READ statement must be issued in a PRINT statement and
must be preceded
with the Ctrl-D character. Once a READ
command has been issued, INPUT statements will accept data
from the file specified in filename until a subsequent DOS
command or an error cancels READ.
The
following illustrates the use of READ:
100 D$ = CHR$(4)
110 PRINT D$ ; " OPEN TEXTA "
120 PRINT D$ ; " READ TEXT A"
130 INPUT X$
140 PRINT X$
150 PRINT D$ ; " CLOSE TEXT A"
160 END
]RUN
THIS IS THE NEW DATA
l
In Applesoft, the GET statement can also be used to read data
from a disk file . Unl ike INPUT, GET returns just one character.
Therefore,
if our text file included the following phrase:
THIS
IS THE NEW DATA
after
an OPEN and READ were executed, the first GET statement
would return the letter T, the second GET statement would
return the letter H, etc.
The following program illustrates the use of GET to read data
from a text file:
100 D$ = CHR$ (4)
110 PRINT D$ ; " OPEN TEXT A"
120 PRINT D$ ; " READ TEXT A"
130 X$ =" "
140 GET Y$
150 IF Y$ = CHR$ ( 13 ) THEN 180
160
X$ = X$ + Y$
170 GOTO 140