Chapter 14. Statement Reference
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DEFine FuNction...END DEFine User-defined function definition statement
DEF FN…END DEF
Names and defines a user-defined function.
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Syntax:
Syntax:Syntax:
Syntax:
Syntax 1 (Defining a numeric function):
DEF FNfunctionname[(dummyparameter[,dummyparameter...])]
Syntax 2 (Defining a string function):
DEF FNfunctionname[(dummyparameter
[,dummyparameter...])][[stringlength]]
Syntax 3 (Exiting from the function block prematurely):
EXIT DEF
Syntax 4 (Ending the function block):
END DEF
Syntax 5 (Assigning a returned value):
FNfunctionname = generalexpression
Syntax 6 (Calling a function):
FNfunctionname[(realparameter[,realparameter ...])]
Parameter:
Parameter:Parameter:
Parameter:
Same as for DEF FN (Single-line form).
(Block form)
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