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
rusing
V= 4 π r3 3
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. (@Ëjust 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
Enter the program. (@Ëjust starts a new line.)
@% @Ér #
O4 /3 *!Ì*
rQ3 ™@Ë@Ï
Put the program on the stack, store it in VOL, and calculate the volume for a radius of 4.
OVOLK
4%VOL%