Texas Instruments TI-89 Titanium

Programming 623
Example 3
This example uses
Dialog...EndDlog to create dialog boxes for input and output. It uses
Loop...EndLoop to calculate the result.
Ê
Defines a dialog box for input.
Ë Converts string entered with Request to an expression.
Ì Loop calculation.
Í Defines a dialog box for output.
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:prog3()
:Prgm
:Dialog
: Title "Enter an integer"
: Request "Integer",n
:EndDlog
:expr(n)!n
:0!temp:0!I
:Loop
: temp+i!temp
: i+1!I
: If i>n
: Exit
:EndLoop
:Dialog
: Title "The answer is"
: Text string(temp)
:EndDlog
:EndPrgm