362
The VIC 20
User
Guide
PRINT#
The
PRINT
External statement (PRINT#) outputs one
or
more
data
items from the computer to an external device (cassette tape unit, disk unit,
or
printer) identified by a logical file number.
Format:
PRINT#lf,data;CHR$(l3);data;CHR$(l3), ... ;CHR$ (l3);data
Data
items listed in the
PRINT#
statement parameter list are written to
the external device identified by logical unit number
If.
Very specific punctuation rules must be observed when writing data to
external devices. A brief summary of punctuation rules
is
given below.
PRINT#
Output to cassette
Flies
Every numeric
or
string variable written to a cassette file must be
followed by a carriage return character. This carriage return character
is
automatically output by a PRINT# statement that has a single
data
item in
its parameter list. But a
PRINT#
statement with more
than
one
data
item in
its parameter list must include
c$
characters that force carriage returns.
For
example, use CHR$(13) to force a carriage return,
or
a string variable that
has been equated to CHR$(13} such as c$=CHR$(13}.
PRINT#
Output
to
Diskette
Flies
The cassette output rules described above. apply also to diskette files
with one exception: Groups
of
string variables· can be separated by comma
characters (CHR$(44». The comma character separators, like the carriage
return separators, must be inserted using CHR$. String variables written to
diskette files with comma character separators must subsequently be read
back by a single INPUT# statement. The INPUT# statement reads all text
from one carriage return character to the next.
PRINT#
Output
to
the
Une
PrInter
When the
PRINT#
statement outputs data to a line printer CHR$ must
equal CHR$(29}. No punctuation characters should separate CHR$ from
data items, as illustrated in the
PRINT#
format definition.
Caution: The form
?#
cannot be used as an abbreviation for PRINT#.
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