Defines a function that calculates the
circumference of a circle. It takes a
single argument
R.
the radius of the
circle. and returns a single numeric
value. the circumference of the circle.
Prints 3.14159265 (the value of
?T).
Assigns to A the value calculated by
the user-defined function
FNC.
Uses the value calculated by the user-
defined function
FNC
as
a branch
condition.
?FNC(l)
A=FNC(14)
55
IF
FNC(X)
>60
GOTO
150
The
DEF
FN
definition statement
is
illegal in immediate mode. However. a
user-defined function that
has
been defined by a
DEF
FN
statement in the current
stored program can
be
referenced in
an
immediate mode statement.
Examples:
10
DEF
FNC(R)=
?T*Rf2
165
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