Dialog, Dim(), Disp – Texas Instruments PLUS TI-89 User Manual
Page 454
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
: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
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,л 1,2;л 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 L1 ¸
{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
.