Operation Manual

Chapter 16: Programming 276
Chapter 16:
Programming
Getting Started: Volume of a Cylinder
Getting Started is a fast-paced introduction. Read the chapter for details.
A program is a set of commands that the TI-84 Plus C executes sequentially, as if you had entered them
from the keyboard. Create a program that prompts for the radius R and the height H of a cylinder and
then computes its volume.
1. Press  ~ ~ to display the
PRGM NEW menu.
2. Press Í to select
1:Create New. The Name=
prompt is displayed, and alpha-lock is on. Press
CY L I
N D E R
, and then press Í to name the program
CYLINDER.
You are now in the program editor. The colon (
: ) in
the first column of the second line indicates the
beginning of a command line.
3. Press  ~
2 to select 2:Prompt from the
PRGM I/O menu. Prompt is copied to the command
line. Press ƒ R ¢ ƒ H to enter the variable
names for radius and height. Press Í.
4. Press y B ƒ
R ¡ ƒ H ¿ ƒ V Í
to enter the expression pR
2
H and store it to the
variable
V.
5. Press  ~
3 to select 3:Disp from the PRGM I/O
menu.
Disp is pasted to the command line. Press y
7
[ã] V O L U M E O I S [ã] ƒ ¢ ƒ V
Í to set up the program to display the text
VOLUME IS on one line and the calculated value of V
on the next.
6. Press y 5 to display the home screen.
7. Press  to display the PRGM EXEC menu. The
items on this menu are the names of stored
programs.