Running An Existing Program - Texas Instruments TI-89 Manual Book

Running an Existing Program

Running a Program
Tip: Use 2 ° to list
existing variables.
PRGM
Highlight a variable and
press ¸ to paste its
name to the entry line.
Note: Arguments specify
initial values for a program.
Refer to page 283.
Note: The TI-89 / TI-92 Plus
also checks for run-time
errors that are found within
the program itself. Refer to
page 310.
"Breaking" a
Program
278 Chapter 17: Programming
After a program is created (as described in the remaining
sections of this chapter), you can run it from the Home screen.
The program's output, if any, is displayed on the Program I/O
screen, in a dialog box, or on the Graph screen.
On the Home screen:
1. Type the name of the program.
2. You must always type a
set of parentheses after
the name.
Some programs require
you to pass an argument
to the program.
3. Press ¸.
When you run a program, the
for errors. For example, the following message is displayed if you:
¦
Do not enter ( ) after the
program name.
This error message appears if you:
¦
Do not enter enough arguments,
if required.
To cancel program execution if an error occurs, press N. You can
then correct any problems and run the program again.
When a program is running, the
status line.
Press ´ to stop program execution. A message is then displayed.
¦
To display the program in the
Program Editor, press ¸. The
cursor appears at the command
where the break occurred.
¦
To cancel program execution,
press N.
prog1()
If arguments are not required
prog1(x,y)
If arguments are required
automatically checks
TI-89 / TI-92 Plus
indicator is displayed in the
BUSY