Texas Instruments TI-89 Manual Book page 454

Dialog
CATALOG
Dialog
block
EndDlog
Generates a dialog box when the program is
executed.
can be either a single statement or a
block
series of statements separated with the ":"
character. Valid
...
I/O , 1:Dialog
Editor are
.
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.
dim()
MATH/Matrix/Dimensions menu
dim(list)
integer
Returns the dimension of
dim(matrix)
Returns the dimensions of
element list {rows, columns}.
dim(string)
Returns the number of characters contained
in character string
Disp
CATALOG
Disp [exprOrString1] [, exprOrString2] ...
Displays the current contents of the Program
I/O screen. If one or more
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
also use the 4 operator to perform unit and
number base conversions.
If
Pretty Print = ON
in pretty print.
From the Program I/O screen, you can press
‡ to display the Home screen, or a program
can use
DispHome
options in the
block
menu item in the Program
,
1:Text 2:Request, 4:DropDown
.
list
list
as a two-
matrix
integer
.
string
exprOrString
4DD and 4Rect . You can
, expressions are displayed
.
Program listing:
:Dlogtest()
:Prgm
:Dialog
:Title "This is a dialog box"
:Request "Your name",Str1
:Dropdown "Month you were born",
seq(string(i),i,1,12),Var1
:EndDlog
:EndPrgm
, and
dim({0,1,2}) ¸
dim([1,ë 1,2;ë 2,3,5]) ¸ {2 3}
dim("Hello") ¸
dim("Hello"&" there") ¸
Disp "Hello" ¸
Disp cos(2.3) ¸
is
{1,2,3,4}! L1 ¸
Disp L1 ¸
Disp 180_min 4 _hr ¸
Note: To type an underscore ( _ ), press:
¥ 
TI-89:
2 
TI-92 Plus:
To type 4, press 2
Appendix A: Functions and Instructions
3
5
11
Hello
ë.666...
{1 2 3 4}
3.ø_hr
Ž .
437