Commodore CBM - Page 259

Be sure that the logical file CLOSEd is the same one that was previously OPENed.
OPEN r2'''NUMBERS''
CLOSE 1
The listing of NUM.PRINT# looks like this:
la PRINT"~. CREATE NUMERIC DATA TAPE •• ":PRINT
213 PRINT" •• MOUNT TAPE; PRESS <RETURN:> WHEN READY •• ":PRINT
3t:1 GET A$: IF A$="" THEN 313
413 PRINT" •• OPENING DATA FILE •• ": OPENl , 1.·2 .• "NUMBERS"
513 FOR N=l TO la
60 PRINT N
70 PRINT#l,N
813 NEXT N
90 PRINT" •• CLOSING DATA FILE •• ":CLOSEl
100 END
The main statements that differentiate this program from a program that prints
only to the screen are at lines 40, 70, and 90: the
OPEN, PRINT#, and CLOSE
commands.
Below
is a RUN of the program:
•• CREA TE NUMERIC DATA TAPE ••
•• MOUNT TAPE; PRESS <RETURN WHEN READY ••
•• OPENING DATA FILE ••
PRESS PLAY & RECORD ON TAPE #1
Of<
1
2
3
4
5
6
7
8
9
la
•• CLOSING DATA FILE ••
246