HP 12C Financial calculator - Manual (Page 110)

110 Section 9: Branching and Looping
File name: hp 12c_user's guide_English_HDPMBF12E44 Page: 110 of 209
Printered Date: 2005/7/29 Dimension: 14.8 cm x 21 cm
Keystrokes Display
gi07 04- 43, 33 07 If condition is true, branches to
program line 07.
:2 05- 45 2 If condition is false, recalls 25% tax
rate to X-register.
gi08 06- 43, 33 08 Branches to program line 08.
:1 07- 45 1 Recalls 20% tax rate to X-register.
b 08- 25 Calculates tax.
fs –12.36 Sets calculator to Run mode.
(Display shows results of running of
previous program.)
Now, we'll store the required numbers in registers R
0
, R
1
, and R
2
, then we’ll run the
program, using Ç so that we can check that the branching occurs properly. It’s
good practice with programs containing conditional test instructions to check that
the program branches correctly for all possible conditions: in this case, if the
income is less than, equal to, or greater than the test value.
Keystrokes Display
20000?0 20,000.00 Stores test value in register R
0
.
20?1 20.00 Stores 20% tax rate in register R
1
.
25?2 25.00 Stores 25% tax rate in register R
2
.
15000 15,000. Keys income less than test value into
display and X-register.
Ê 01- 45 0 Line 01: :0.
20,000.00 Test value has been recalled to
X-register, moving income to
Y-register.
Ê 02- 34 Line 02: ~
15,000.00 Income has been placed in
X-register and test value has been
placed in Y-register.
Ê 03- 43 34 Line 03: go
15,000.00
Ê 04- 43, 33 07 Condition tested by o was true,
so program execution continued
with line 04: gi07.