Reference Guide

1-4 RPL Programming
To stop an executing program:
 Press − .
Example: Enter a program that takes a radius value from the stack and calculates the volume of a sphere of radius
r using
3
3
4
r V π =
If you were going to calculate the volume manually after entering the radius on the stack, you might press these
keys:
3Q! ì* 4`3/*@ï
Enter the same keystrokes in a program. (@ë just starts a new line.)
@ %
3Q! ì* 4#3/ *
@ë @ï
Put the program on the stack.
`
Store the program in variable VOL. Then put a radius of 4 on the stack and run the VOL program.
OVOL K
4 J %VOL%
The program is
« 3 ^ π * 4 3 / * →NUM »
Example: Replace the program from the previous example with one that’s easier to read. Enter a program that
uses a local variable structure to calculate the volume of a sphere. The program is
« → r '4/3*π*r^3' →NUM »
(You need to include →NUM because π causes a symbolic result, unless Flag –2 or Flag –3 is set)
Enter the program. (@ë just starts a new line.)
@ %
@ér #
O4 /3 * ! ì*
r Q3 ™@ë@ï
Put the program on the stack, store it in VOL, and calculate the volume for a radius of 4.
OVOLK
4 %VOL%