Texas Instruments TI-Nspire CX CAS TINSPIRE-CX-CAS 产品宣传页
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TINSPIRE-CX-CAS
522 Getting Started with the Program Editor
Requesting the Values from the User (Programs Only)
You can use the
Request
and
RequestStr
commands in a program to make the
program pause and display a dialog box prompting the user for information.
This method does not require users to remember variable names or the order
in which they are needed.
This method does not require users to remember variable names or the order
in which they are needed.
You cannot use the
Request
or
RequestStr
command in a function.
1.
Define the program.
Define calculatearea()=
Prgm
Prgm
Request "Width: ",w
Request "Height: ",h
Request "Height: ",h
area:=w*h
EndPrgm
EndPrgm
2.
Run the program and respond to the requests.
calculatearea() : area
Width: 3
Width: 3
(3 entered as a response)
Height: 23.64 (23.64 entered as a
response)
response)
70.92
Use
RequestStr
instead of
Request
when you want the program to interpret the
user’s response as a character string rather than a math expression. This
avoids requiring the user to enclose the response in quotation marks (““).
avoids requiring the user to enclose the response in quotation marks (““).
Displaying Information from a Function or Program
A running function or program does not display intermediate calculated results
unless you include a command to display them. This is an important difference
between performing a calculation on the entry line and performing it in a
function or program.
unless you include a command to display them. This is an important difference
between performing a calculation on the entry line and performing it in a
function or program.
The following calculations, for example, do not display a result in a function or
program (although they do from the entry line).
program (although they do from the entry line).
©
x:=12•6