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 Nis 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,ë1,2;ë2,3,5]) ¸{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 4DD and 4Rect. 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.