276 Chapter 17: Programming
17PROGRM.DOC TI-89/TI-92 Plus: Programming (English) Susan Gullord Revised: 02/23/01 1:14 PM Printed: 02/23/01 2:18 PM Page 276 of 40
Steps
³
TI.89
Keystrokes
›
TI.92 Plus
Keystrokes Display
1. Start a new program on the
Program Editor.
O73 O73
2. Type
PROG1 (with no spaces) as
the name of the new program
variable.
DD
PROGj1
DD
PROG1
3. Display the “template” for a new
program. The program name,
Prgm, and EndPrgm are shown
automatically.
After typing in an input box such as
Variable, you must press
¸
twice.
¸¸ ¸¸
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 0.
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.
Type the
program lines
as shown.
Press ¸
at the end of
each line.
Preview of Programming
Write a program that prompts the user to enter an integer, sums all integers from 1 to the
entered integer, and displays the result.