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如何准确地获得一个整数？

function NumbersOnlyNoDecimals(pInString)

  lNumbersOnly = ""

    for x = 1 to len(pInString)

  y = (len(pInString)-x+1)

      if isNumeric(mid(pInString, y,1)) then

    lNumbersOnly = lNumbersOnly + mid(pInString,y,1)

  else

    if mid(pInString,y,1) = "." then

lNumbersOnly = ""

      end if

  end if

    next

 

  for x = 1 to len(lNumbersOnly)

    y = len(lNumbersOnly) - x + 1

    lNumbersOnlyForward = lNumbersOnlyForward + mid(lNumbersOnly,y,1)

  next

 

  if lNumbersOnlyForward = "" then lNumbersOnlyForward = "0"

  NumbersOnlyNoDecimals = lNumbersOnlyForward

 

end function