Editing Programs - Texas Instruments TI-84 PLUS - Graphing Calculator Manual Book

Programs can access variables, lists, matrices, and strings saved in memory. If a program stores a
new value to a variable, list, matrix, or string, the program changes the value in memory during
execution.
You can call another program as a subroutine.
Executing a Program
To execute a program, begin on a blank line on the home screen and follow these steps.
1. Press  to display the
2. Select a program name from the
(for example,
prgmCYLINDER
3. Press Í to execute the program. While the program is executing, the busy indicator is on.
Last Answer ( ) is updated during program execution. Last Entry is not updated as each
Ans
command is executed (Chapter 1).
The TI-84 Plus checks for errors during program execution. It does not check for errors as you
enter a program.
Breaking a Program
To stop program execution, press É. The
• To return to the home screen, select
• To go where the interruption occurred, select

Editing Programs

Editing a Program
To edit a stored program, follow these steps.
1. Press  ~ to display the
2. Select a program name from the
are displayed.
The program editor does not display a $ to indicate that a program continues beyond the
Note:
screen.
3. Edit the program command lines.
• Move the cursor to the appropriate location, and then delete, overwrite, or insert.
Press ' to clear all program commands on the command line (the leading colon
•
remains), and then enter a new program command.
menu.
PRGM EXEC
menu.
PRGM EXEC
).
ERR:BREAK
.
1:Quit
2:Goto
menu.
PRGM EDIT
menu. Up to the first seven lines of the program
PRGM EDIT
is pasted to the home screen
prgmname
menu is displayed.
.
Chapter 16: Programming 279