Programming 573
If the function requires input, one or more values must be passed to the function. (A
user-defined function can store to local variables only, and it cannot use instructions that
prompt the user for input.)
How to Return a Value from a Function
There are two ways to return a value from a function:
• As the last line in the function
(before
EndFunc), calculate the
value to be returned.
:cube(x)
:Func
:x^3
:EndFunc
Function name, which you
specify when you create a
new function.
Enter your commands
between Func and
EndFunc.
All function lines
begin with a colon.
Be sure to edit this line to include any
necessary arguments. Remember to use
argument names in the definition that will
never be used when calling the function.
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