Radio Shack TRS-80 Owner's Manual page 129

JF
ililll^lSSllSssi
210 LINE INPUT "TYPE
IN
YOUR NAME "5 A$
220 LINE INPUT "DO YOU LIKE YOUR
COMPUTER?
"I
B*
230 LINE INPUT "WHY? "! C*
235 PRINT
240 PRINT A*
:
PRINT
250
IF
B$
=
"NO"
THEN 270
2G0 PRINT
"I
LIKE MY
COMPUTER BECAUSE
»
!
C$ ;END
270 PRINT
"I
DO
NOT LIKE
MY
COMPUTER BECAUSE "! C*
Notice
that
when
line
210
is
executed, a question
mark
is
not displayed after the
statement,
"Type
in
your name." Also, notice
on
line
230 you can
answer
the
question '''Why" with a statement full
of delimiters,
commas
and
quotes.
MID$ =
Replace Portion
of String
wins (oidsiring.
f-osiiw-. ;sncih}
-
rg&acm.zr'-^
:<..
oidstring
is
the
variaJste-name
j'
*>>?
suing
ycr:
--wi'
.':
i-i'-sr^e
position
is
the
numeric
expressioi? spesi'ying ihs
a*ir3
:
:
or
IH
?i
; £t
character
to
be
changed.
length
is
a
numeric expression
specifying the rsiirrbsr si
crtarsnm
te
ne
fipri
nnrh
replacement-string
Is
3 string
expression
to
^sacs
m
sfjtc^sz
of
oidstring.
Note:
If
replacement-string
is
shorter tea*,
/g^.
tug;-,
she entire
;'£s?8^n^
sfr//igwiil
be used.
This statement
lets
you
replace
any
part
of a string
with a specified
new
string,
giving
you
a
powerful
string
editing
capability.
Note that the length
of the resultant
string
is
always
the
same
as
the original
string.
Examples
A$
=
"Lincoln"
in
the
examples below:
MID*(A*» 3,
U)
=
"12345"; PRINT
A$
which returns
LH234N.
111