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30 lines
1.4 KiB
Markdown
30 lines
1.4 KiB
Markdown
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Optional **parameters** are values passed to [SUB](SUB) and [FUNCTION](FUNCTION) procedures. They are always enclosed in parenthesis inside the procedures.
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## Syntax
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> [SUB](SUB) SubName[**(*parameter*** [[AS](AS) [Type](Type)][**, ...**]**)**]
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> [FUNCTION](FUNCTION) FunctionName[**(*parameter*** [[AS](AS) [Type](Type)][**, ...**]**)**]
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> [CALL](CALL) SubName[**(*parameter***[**, ...**]**)**]
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> SubName [***parameter***][**, ...**]
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> FunctionName[**(*parameter***[**, ...**]**)**]
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## Usage
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* Inside of sub-procedures, multiple parameters variables are separated by [comma](comma)s in a list and always enclosed inside of parenthesis.
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* When [CALL](CALL) is used to call a [SUB](SUB) procedure all parameters must be enclosed inside parenthesis too.
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* When just the procedure name is used to call a [SUB](SUB), the parameters are listed after the name. Multiple parameters require commas.
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* [FUNCTION](FUNCTION) procedure parameters are always enclosed in parenthesis. Multiple parameters are separated by commas.
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* Parameters can be literal values or variables when a [SUB](SUB) procedure is called or a [FUNCTION](FUNCTION) procedure is referenced.
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* To pass parameter variables [BYVAL](BYVAL) to protect the value in a call, parenthesis can be placed around each variable name also.
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* To pass [arrays](arrays) to a sub-procedure use empty brackets after the name or indicate the index in the call.
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## See Also
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* [SUB](SUB)
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* [FUNCTION](FUNCTION)
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* [CALL](CALL)
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