E-42
• Example:
Use Heron’s formula to perform a series of calculations to
determine the area of triangles for which the length of side A is fixed, and
the lengths of sides B and C are variable.
Program
?
→
A: Lbl 1: ?
→
B: ?
→
C: (A + B + C)
÷
2
→
D
^
D
×
(D – A)
×
(D – B)
×
(D – C): Ans
^
Goto 1
k
Conditional Jump Using a Relational Operator
You can use relational operators so program execution compares two
values and then decides which processing should be performed based on
the relationship between the two values.
• Example:
To create a program that calculates the total of a series of input
values, with calculation being terminated whenever zero is input
Program
0
→
B: Lbl 1: ?
→
A: A = 0
S
Goto 2: B + A
→
B: Goto 1: Lbl 2: B
1
2
Statement 1 Statement 2
3
1
Assigns 0 to variable B.
2
Assigns the input value to variable A.
3
If A = 0 is true, Statement 1 (Goto 2) is executed. If false, execution
advances to Statement 2 without executing Statement 1.
u
Relational Operator Notes
• The relational operators you can use in a program are: =,
G
, >,
>
.
• A relational operation that is true returns a value of 1, while a false
relational operation returns a value of 0. For example, executing 3 = 3
would return a result of 1, while 1 > 3 returns a result of 0.
k
Other Program Statements
u
F
Key Settings
The items shown below can be included as statements inside of a program.
You can input one of these statements using the same procedure as you do
for normal calculation. That is, press the
F
key to display a selection
screen and then press the number key that corresponds to the setting you
want.
Deg, Rad, Gra, Fix, Sci, Norm, Dec, Hex, Bin, Oct
• Example:
Deg: Fix 3
