Texas Instruments TI-89 Titanium Short User Manual page 84

Steps and keystrokes
4. Type the following program lines.
Request "Enter an integer",n
Displays a dialog box that prompts
"Enter an integer", waits for the user to
enter a value, and stores it (as a string)
to variable n.
!
expr(n) n
Converts the string to a numeric
expression.
!
0 temp
Creates a variable named temp and
initializes it to
For i,1,n,1
Starts a For loop based on variable i.
First time through the loop, i = 1. At
end of loop, i is incremented by 1. Loop
continues until i > n.
!
temp+i temp
Adds current value of i to temp.
EndFor
Marks the end of the For loop.
Disp temp
Displays the final value of temp.
Type the program lines as shown. Press
¸ at the end of each line.
5. Go to the Home screen. Enter the program
name, followed by a set of parentheses.
You must include ( ) even when there are no
arguments for the program.
The program displays a dialog box with the
prompt specified in the program.
@ " 2 ™ PROG j 1 c d
¸
78
.
0
Display
prog1()
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