Data - Commodore PET User Manual

Example:
The following example sequence uses CMD to obtain program listings and
printouts on paper.
DATA
OPEN 5,5
CMD 5
LIST
LIST
PRINT A
PRINT#5
Device 5 is a hard-copy printer.
Direct subsequent display log to the logical file
5 device.
Prints the program listing on paper.
Prints another copy of the program listing on
paper.
Prints the value of variable A on paper.
Return to display screen log (prints a blank line
at the printer and "unlistens" the printer
deviceL
One DATA item
Multiple DATA items
The DATA statement declares constants that are to be assigned by the
READ statement.
Format:
DATA {constant
consta nt. constant. ... constant
where:
constant is a simple numeric or string constant. Varia-
bles, expressions and functions are illega!.
DATA statements may be placed anywhere in the program. See the READ
statement for a description of DATA statement processing.
Constants in the DATA statement list may be numeric or string. Numeric
constants must agree in format with the variables to which they will be assigned.
String constants are usually enclosed in double quotation marks. The quotes are
not necessary unless the string contains graphic characters or any of the follow-
ing special symbols: blanks (spaces), commas, and colons. Blanks and graphic
characters are ignored in a string unless they are enclosed in quotes. Any con-
stant may be read into a string variable. Numeric data read into a string variable
can be converted to its numeric equivalent by the VAL function. A double quota-
tion mark cannot be represented in a DATA string; an Assignment statement
must be used in the following manner:
D$=CHR$(34): 70$
"
t
CHR$(34) is the double quotation mark.
The DATA statement is valid in program mode only.
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