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Appendix A: Functions and Instructions 437
8992APPA.DOC TI-89 / TI-92 Plus: Appendix A (US English) Susan Gullord Revised: 02/23/01 1:48 PM Printed: 02/23/01 2:21 PM Page 437 of 132
Dialog
CATALOG
Dialog
block
EndDlog
Generates a dialog box when the program is
executed.
block
can be either a single statement or a
series of statements separated with the “:”
character. Valid
block
options in the
…
I/O
,
1:Dialog
menu item in the Program
Editor are
1:Text
,
2:Request,
4:DropDown
, and
7:Title
.
The variables in a dialog box can be given
values that will be displayed as the default
(or initial) value. If
¸
is pressed, the
variables are updated from the dialog box
and variable
ok
is set to
1
. If
N
is pressed,
its variables are not updated, and system
variable ok is set to zero.
Program listing:
:Dlogtest()
:Prgm
:Dia
l
og
:Tit
l
e"T
h
is is a
d
ia
l
og
b
ox"
:Request "Your name",Str
1
:Drop
d
own "Mont
h
you were
b
orn",
seq
(
string
(
i
)
,i,
1
,
1
2
)
,Var
1
:En
d
D
l
og
:En
d
Prgm
dim()
MATH/Matrix/Dimensions menu
dim(
list
)
⇒
integer
Returns the dimension of
list
.
dim({0,1,2})
¸
3
dim(
matrix
)
⇒
list
Returns the dimensions of
matrix
as a two-
element list {rows, columns}.
dim([1,
ë
1,2;
ë
2,3,5])
¸
{2 3}
dim(
string
)
⇒
integer
Returns the number of characters contained
in character string
string
.
dim("Hello")
¸
5
dim("Hello"&" there")
¸
11
Disp
CATALOG
Disp
[
exprOrString1
] [
,
exprOrString2
]
...
Displays the current contents of the Program
I/O screen. If one or more
exprOrString
is
specified, each expression or character string
is displayed on a separate line of the Program
I/O screen.
An expression can include conversion
operations such as
4
DD
and
4
Rect
. You can
also use the
4
operator to perform unit and
number base conversions.
If
Pretty Print = ON
, expressions are displayed
in pretty print.
From the Program I/O screen, you can press
‡
to display the Home screen, or a program
can use
DispHome
.
Disp "Hello"
¸
Hello
Disp cos(2.3)
¸ ë
.666…
{1,2,3,4}
!
L1
¸
Disp L
1
¸
{1
2 3 4
}
Disp 180_min
4
_hr
¸
3.
ø
_hr
Note: To type an underscore ( _ ), press:
TI-89:
¥
TI-92 Plus:
2
To type
4
, press
2
.