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PCOUNT( ) Function

  • Artikel

Returns the number of parameters passed to the current program, procedure, or user-defined function.

PCOUNT( )

Return Values

Numeric

Remarks

PCOUNT( ) is useful for determining how many parameters are passed to the current program, procedure, or user-defined function.

Examples

Example 1 calls a procedure and displays in a wait window the number of parameters passed.

Example 2 uses a procedure to display the average of 4 values.

Example 1

DO testpar WITH 1,2,3

PROCEDURE testpar
PARAMETERS gn1,gn2,gn3
gcMessage = 'PCOUNT( ) ='+ALLTRIM(STR(PCOUNT( )))
WAIT WINDOW (gcMessage)
RETURN

Example 2

SET TALK OFF
gnVal1 = 10
gnVal2 = 20
gnVal3 = 30
gnVal4 = 15
gnMin = getavg(gnVal1, gnVal2, gnVal3, gnVal4)
? 'Average value is '
?? gnMin

* This user-defined function permits up to 9 parameters to be passed.
* It uses the PCOUNT( ) function to determine how many
* were passed and returns the average value.

FUNCTION getavg
PARAMETERS gnPara1,gnPara2,gnPara3,gnPara4,gnPara5, ;
   gnPara6,gnPara7,gnPara8,gnPara9
IF PCOUNT( ) = 0
   RETURN 0
ENDIF
gnResult = 0
FOR gnCount = 1 to PARAMETERS( )
   gcCompare = 'gnPara' +(STR(gnCount,1))
   gnResult = gnResult + EVAL(gcCompare)
ENDFOR
gnResult = gnResult / (gnCount - 1)
RETURN gnResult

See Also

DO Command | FUNCTION Command | LPARAMETERS Command | LOCAL Command | PARAMETERS Command | PARAMETERS( ) Function | PRIVATE Command | PROCEDURE Command | PUBLIC Command | SET UDFPARMS Command