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Modifying an Exi ting Program to Create a New One
You can use the procedure described below to recall an existing program, modify it, and then
run the result as a new program. This helps reduce key input requirements.
The following shows how to modify the "OCTA" program we created on page 12-2-1 to
handle tetrahedrons.
Example: To create a program named "TETRA" that calculates the surface areas (cm
volumes (cm
and 15 cm
A
The following is the program required for this example.
Length of One Side A ..........Input A
Surface Area S ....................Print approx(
Volume V ............................Print approx(
The following is the "OCTA" program (page 12-2-1).
Length of One Side A ..........Input A
Surface Area S ....................Print approx(2
Volume V ............................Print approx(
A comparison of the two programs indicates that the following modifications of the "OCTA"
program will produce a program that performs the calculations required by this example.
• Delete "2 " (underlined with a wavy line above).
• Change 3 to 12 (underlined with double lines above).
Cla
Pad Operation
(1) On the application menu, tap
(2) Tap
, or tap [Edit] and then [Open File].
12-3-2
Debugging a Program
3
) of three regular tetrahedrons, the lengths of whose sides are 7, 10,
The following formulas calculate the surface area S and volume V of a
regular tetrahedron for which the length of one side A is known.
2
S = 3 A
, V =
.
20060301
2
3
A
12
(3)
A^2)
(2)
12
A^3)
(3)
A^2)
(2)
3
A^3)
2
) and
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