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Use of Functions
#20
Functions can, of course, also be passed to procedures (subs) as arguments. Just as functions can be passed to functions as arguments. This is usually done to save code lines. However, for people unfamiliar with this, it's difficult to understand.

Code: (Select All)

Option _Explicit

Declare Function funcEndpreis(kaufpreis, mehrwertSteuer As Double) As Double
Declare Sub subEndpreis(eingabe As Double)

Dim As Double kaufpreis, mehrwertSteuer

Locate 2, 3
Input "Kaufpreis    : ", kaufpreis
Locate 3, 3
Input "Mehrwertsteuer: ", mehrwertSteuer
Locate 4, 3
Print "----------------------"

Locate 6, 3
Print "Endpreis mit Funktion"
Locate 7, 3
Print Using "Der Endpreis betraegt: ####,#.## Euro"; funcEndpreis(kaufpreis, mehrwertSteuer)

Locate 9, 3
Print "Endpreis mit Prozedur/Sub"
Locate 10, 3
'Function as an argument to a sub
Call subEndpreis(funcEndpreis(kaufpreis, mehrwertSteuer))

End


Sub subEndpreis (eingabe As Double)

  'Da braucht man keine neue Variable!
  Print Using "Der Endpreis betraegt: ####,#.## Euro"; eingabe
End Sub

Function funcEndpreis (kaufpreis, mehrwertSteuer As Double)

  Dim As Double gesamtpreis

  gesamtpreis = kaufpreis + ((kaufpreis * mehrwertSteuer) / 100)
  funcEndpreis = gesamtpreis
End Function

Functions can also produce more than one output, but only return one. (Uploading an image isn't working right now.)

Code: (Select All)

Function funcEndpreis (kaufpreis, mehrwertSteuer As Double)

  Dim As Double gesamtpreis, fool

  fool = kaufpreis * 1.5
  Print fool

  gesamtpreis = kaufpreis + ((kaufpreis * mehrwertSteuer) / 100)
  funcEndpreis = gesamtpreis
End Function

It looks pretty confusing, but it works.
Reply


Messages In This Thread
Use of Functions - by PhilOfPerth - 05-20-2025, 11:21 PM
RE: Use of Functions - by bplus - 05-20-2025, 11:24 PM
RE: Use of Functions - by ahenry3068 - 05-20-2025, 11:34 PM
RE: Use of Functions - by PhilOfPerth - 05-21-2025, 12:25 AM
RE: Use of Functions - by bplus - 05-21-2025, 12:39 AM
RE: Use of Functions - by PhilOfPerth - 05-21-2025, 01:33 AM
RE: Use of Functions - by SMcNeill - 05-21-2025, 02:33 AM
RE: Use of Functions - by PhilOfPerth - 05-21-2025, 04:24 AM
RE: Use of Functions - by ahenry3068 - 05-21-2025, 06:41 AM
RE: Use of Functions - by bplus - 05-21-2025, 09:12 AM
RE: Use of Functions - by SMcNeill - 05-21-2025, 09:45 AM
RE: Use of Functions - by bplus - 05-21-2025, 11:23 AM
RE: Use of Functions - by bplus - 05-21-2025, 11:35 AM
RE: Use of Functions - by Kernelpanic - 05-22-2025, 03:00 PM
RE: Use of Functions - by bplus - 05-21-2025, 11:41 AM
RE: Use of Functions - by SMcNeill - 05-21-2025, 11:45 AM
RE: Use of Functions - by bplus - 05-21-2025, 11:55 AM
RE: Use of Functions - by TempodiBasic - 05-21-2025, 12:06 PM
RE: Use of Functions - by mdijkens - 05-21-2025, 12:11 PM
RE: Use of Functions - by TempodiBasic - 05-21-2025, 08:40 PM
RE: Use of Functions - by Dimster - 05-21-2025, 03:34 PM
RE: Use of Functions - by Kernelpanic - 05-21-2025, 06:01 PM
RE: Use of Functions - by CharlieJV - 05-22-2025, 02:37 AM
RE: Use of Functions - by hsiangch_ong - 05-22-2025, 03:30 PM
RE: Use of Functions - by PhilOfPerth - 05-22-2025, 10:22 PM
RE: Use of Functions - by bplus - 05-22-2025, 11:37 PM
RE: Use of Functions - by madscijr - 05-23-2025, 12:34 AM
RE: Use of Functions - by bplus - 05-23-2025, 10:29 AM
RE: Use of Functions - by bplus - 05-23-2025, 10:49 AM
RE: Use of Functions - by bplus - 05-23-2025, 11:22 AM
RE: Use of Functions - by PhilOfPerth - 05-23-2025, 10:16 PM
RE: Use of Functions - by Pete - 05-23-2025, 10:55 PM
RE: Use of Functions - by madscijr - 05-24-2025, 03:10 AM
RE: Use of Functions - by OldMoses - 05-25-2025, 06:05 PM
RE: Use of Functions - by eoredson - 05-26-2025, 08:59 PM
RE: Use of Functions - by PhilOfPerth - 05-28-2025, 03:32 AM
RE: Use of Functions - by Kernelpanic - 05-26-2025, 11:47 PM
RE: Use of Functions - by Pete - 05-27-2025, 11:25 PM
RE: Use of Functions - by bplus - 05-28-2025, 06:17 AM
RE: Use of Functions - by PhilOfPerth - 05-28-2025, 09:11 AM
RE: Use of Functions - by bplus - 05-28-2025, 09:17 AM
RE: Use of Functions - by PhilOfPerth - 05-28-2025, 09:22 AM
RE: Use of Functions - by SMcNeill - 05-28-2025, 09:53 AM
RE: Use of Functions - by PhilOfPerth - 05-28-2025, 10:59 AM
RE: Use of Functions - by Kernelpanic - 05-28-2025, 05:08 PM
RE: Use of Functions - by TempodiBasic - 05-28-2025, 10:18 PM
RE: Use of Functions - by Pete - 05-29-2025, 12:08 AM
RE: Use of Functions - by Pete - 05-29-2025, 12:22 AM
RE: Use of Functions - by PhilOfPerth - 05-29-2025, 02:02 AM
RE: Use of Functions - by PhilOfPerth - 05-29-2025, 02:42 AM
RE: Use of Functions - by SMcNeill - 05-29-2025, 02:38 AM
RE: Use of Functions - by Pete - 05-29-2025, 06:52 PM
RE: Use of Functions - by Kernelpanic - 05-29-2025, 08:21 PM
RE: Use of Functions - by TempodiBasic - 05-30-2025, 01:49 PM



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