Request
Catalog >
The optional
statusVar
argument gives the
program a way to determine how the user
dismissed the dialog box. Note that
statusVar
requires the
DispFlag
argument.
•
If the user clicked
OK
or pressed
Enter
or
Ctrl+Enter
, variable
statusVar
is set to a
value of
1
.
•
Otherwise, variable
statusVar
is set to a
value of
0
.
The
func
() argument allows a program to
store the user’s response as a function
definition. This syntax operates as if the
user executed the command:
Define
func
(
arg1
, ...
argn
) =
user’s
response
The program can then use the defined
function
func
(). The
promptString
should
guide the user to enter an appropriate
user’s response
that completes the
function definition.
Note:
You can use the Request command
within a user-defined program but not
within a function.
To stop a program that contains a
Request
command inside an infinite loop:
•
Handheld:
Hold down the
c
key and
press
·
repeatedly.
•
Windows®:
Hold down the
F12
key and
press
Enter
repeatedly.
•
Macintosh®:
Hold down the
F5
key and
press
Enter
repeatedly.
•
iPad®:
The app displays a prompt. You
can continue waiting or cancel.
Note:
See also
RequestStr
Define a program:
Define polynomial()=Prgm
Request "Enter a polynomial in
x:",p(x)
Disp "Real roots are:",polyRoots
(p(x),x)
EndPrgm
Run the program and type a response:
polynomial()
Result after entering x^3+3x+1 and selecting
OK
:
Real roots are: {-0.322185}
RequestStr
Catalog >
RequestStr
promptString
,
var
[
,
DispFlag
]
Define a program:
Alphabetical Listing
147
Содержание TI-Nspire CAS
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