Commodore 16 User Manual page 77

String Functions
String luncnons differ from numeric functions
in
thai
Ihey
return
characters,
graphics or
numbers
from
a
stnng (defined
by quotation
marks)
instead
of
a number.
CHR$(X)
This function returns a
string
character
whose
ASCII code
is
X.
ERR$(N)
Returns string
describing error condifion
N
(see
TRAP)
HEXJ(N)
Returns
a 4
character
string containing the
hexadecimal
representation
of
value N
(0
<
N
<
65535)
LEFT$(X$,X)
This returns
a string
containing the
leftmost X characters
of
X$.
LEN(X$)
Returns the
number
of
characters
(including
spaces and
other symbols)
in
tne
siring
X$
1
50
I
I
I
I
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[
f
I
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f
MIDS(X$,N,X)
This
returns
a string
containing
X characters, starting
from
the
Nth
character
in
XS.
MIDS can also
be used on
the
left
side of
assignment
statement as
a
pseudo-variable
as
well
as a function.
MIDS
{string
variable, starting position, length)
=
source
siring.
This
function
reassigns values
of positions (starting position)
through
(starling position
+
length)
of
source
string to
the characters
of string
variable
in
corresponding
locations.
Length
defaults
to
the length of
string variables,
and an
error results
If
(starting position
+
length)
is
greater than the length
of
the
source
string.
EXAMPLE
10
A$-"THE
LAST
GOODBYE":
20
PRINT AS
30
MIDS(AJ,6,3>="ONG"
40
PRINT AS
RIGHTS(XS,X)
This returns the right-most
X
characlers
In
XS
STR${X)
This returns a
string
which
is
identical to the
PRINTed
version of XS.
EXAMPLE
AS=STR$(X)
15i