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FUNCTION

Declares a user-defined function.

Syntax

FUNCTION function_name [ ( arguments ) ] [ STATIC ] … function_name = expression … END FUNCTION

Notes

• function_name is the name of the user-defined function. The name can end with a type-declaration character (%, &, !, # or $) to indicate the type of value it returns.
• arguments is an optional list of parameters, separated by commas, to be passed to the function.
• To specify the type of each variable, use the following form: variable[()] AS type
• The STATIC keyword directs QBasic to save the values of the function’s local variables between function calls.
• For a function to return a value, the function must at some point assign an expression to the function name.

Example

FUNCTION Min% (a AS INTEGER, b AS INTEGER)
  IF (a < b) THEN
    Min% = a
  ELSE
    Min% = b
  END IF
END FUNCTION

PRINT "Min of 5 and 3 is"; Min%(5, 3)

See Also

• DECLARE, DEF FN, EXIT, STATIC, SUB