Task: Number names








VB: Public twenties As Variant
Public decades As Variant
Public orders As Variant

Private Sub init()
    twenties = [{"zero","one","two","three","four","five","six","seven","eight","nine","ten", "eleven","twelve","thirteen","fourteen","fifteen","sixteen","seventeen","eighteen","nineteen"}]
    decades = [{"twenty","thirty","forty","fifty","sixty","seventy","eighty","ninety"}]
    orders = [{1E15,"quadrillion"; 1E12,"trillion"; 1E9,"billion"; 1E6,"million"; 1E3,"thousand"}]
End Sub

Private Function Twenty(N As Variant)
    Twenty = twenties(N Mod 20 + 1)
End Function
 
Private Function Decade(N As Variant)
    Decade = decades(N Mod 10 - 1)
End Function
 
Private Function Hundred(N As Variant)
    If N < 20 Then
        Hundred = Twenty(N)
        Exit Function
    Else
        If N Mod 10 = 0 Then
            Hundred = Decade((N \ 10) Mod 10)
            Exit Function
        End If
    End If
    Hundred = Decade(N \ 10) & "-" & Twenty(N Mod 10)
End Function
 
Private Function Thousand(N As Variant, withand As String)
    If N < 100 Then
        Thousand = withand & Hundred(N)
        Exit Function
    Else
        If N Mod 100 = 0 Then
            Thousand = withand & Twenty(WorksheetFunction.Floor_Precise(N / 100)) & " hundred"
            Exit Function
        End If
    End If
    Thousand = Twenty(N \ 100) & " hundred and " & Hundred(N Mod 100)
End Function

Private Function Triplet(N As Variant)
    Dim Order, High As Variant, Low As Variant
    Dim Name As String, res As String
    For i = 1 To UBound(orders)
        Order = orders(i, 1)
        Name = orders(i, 2)
        High = WorksheetFunction.Floor_Precise(N / Order)
        Low = N - High * Order 
        If High <> 0 Then
            res = res & Thousand(High, "") & " " & Name
        End If
        N = Low
        If Low = 0 Then Exit For
        If Len(res) And High <> 0 Then
            res = res & ", "
        End If
    Next i
    If N <> 0 Or res = "" Then
        res = res & Thousand(WorksheetFunction.Floor_Precise(N), IIf(res = "", "", "and "))
        N = N - Int(N)
        If N > 0.000001 Then
            res = res & " point"
            For i = 1 To 10
                n_ = WorksheetFunction.Floor_Precise(N * 10.0000001)
                res = res & " " & twenties(n_ + 1)
                N = N * 10 - n_
                If Abs(N) < 0.000001 Then Exit For
            Next i
        End If
    End If
    Triplet = res
End Function
 
Private Function spell(N As Variant)
    Dim res As String
    If N < 0 Then
        res = "minus "
        N = -N
    End If
    res = res & Triplet(N)
    spell = res
End Function
 
Private Function smartp(N As Variant)
    Dim res As String
    If N = WorksheetFunction.Floor_Precise(N) Then
        smartp = CStr(N)
        Exit Function
    End If
    res = CStr(N)
    If InStr(1, res, ".") Then
        res = Left(res, InStr(1, res, "."))
    End If
    smartp = res
End Function
 
Sub Main()
    Dim si As Variant
    init
    Samples1 = [{99, 300, 310, 417, 1501, 12609, 200000000000100, 999999999999999, -123456787654321,102003000400005,1020030004,102003,102,1,0,-1,-99, -1501,1234,12.34}]
    Samples2 = [{10000001.2,1E-3,-2.7182818, 201021002001,-20102100200,2010210020,-201021002,20102100,-2010210, 201021,-20102,2010,-201,20,-2}]
    For i = 1 To UBound(Samples1)
        si = Samples1(i)
        Debug.Print Format(smartp(si), "@@@@@@@@@@@@@@@@"); " "; spell(si)
    Next i
    For i = 1 To UBound(Samples2)
        si = Samples2(i)
        Debug.Print Format(smartp(si), "@@@@@@@@@@@@@@@@"); " "; spell(si)
    Next i
End Sub



Fortran: program spell

  implicit none
  integer :: e
  integer :: i
  integer :: m
  integer :: n
  character (9), dimension (19), parameter :: small =       &
    & (/'one      ', 'two      ', 'three    ', 'four     ', &
    &   'five     ', 'six      ', 'seven    ', 'eight    ', &
    &   'nine     ', 'ten      ', 'eleven   ', 'twelve   ', &
    &   'thirteen ', 'fourteen ', 'fifteen  ', 'sixteen  ', &
    &   'seventeen', 'eighteen ', 'nineteen '/)
  character (7), dimension (2 : 9), parameter :: tens =        &
    & (/'twenty ', 'thirty ', 'forty  ', 'fifty  ', 'sixty  ', &
    &   'seventy', 'eighty ', 'ninety '/)
  character (8), dimension (3), parameter :: big = &
    & (/'thousand', 'million ', 'billion '/)
  character (256) :: r

  do
    read (*, *, iostat = i) n
    if (i /= 0) then
      exit
    end if
    if (n == 0) then
      r = 'zero'
    else
      r = ''
      m = abs (n)
      e = 0
      do
        if (m == 0) then
          exit
        end if
        if (modulo (m, 1000) > 0) then
          if (e > 0) then
            r = trim (big (e)) // ' ' // r
          end if
          if (modulo (m, 100) > 0) then
            if (modulo (m, 100) < 20) then
              r = trim (small (modulo (m, 100))) // ' ' // r
            else
              if (modulo (m, 10) > 0) then
                r = trim (small (modulo (m, 10))) // ' ' // r
                r = trim (tens (modulo (m, 100) / 10)) // '-' // r
              else
                r = trim (tens (modulo (m, 100) / 10)) // ' ' // r
              end if
            end if
          end if
          if (modulo (m, 1000) / 100 > 0) then
            r = 'hundred' // ' ' // r
            r = trim (small (modulo (m, 1000) / 100)) // ' ' // r
          end if
        end if
        m = m / 1000
        e = e + 1
      end do
      if (n < 0) then
        r = 'negative' // ' ' // r
      end if
    end if
    write (*, '(a)') trim (r)
  end do

end program spell