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Everything about REXX
  Sorting in REXX: The Bubble Sort
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  REXX function to produce a fixed-length number
  REXX program to produce lottery numbers
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           Home   > REXX   > REXX Bubble Sort

Execute a TSO command, and capture and use the output in your REXX program

This illustrates the use of the REXX OUTTRAP function.
/* rexx dollars
   internal or external function that will format a number in currency format
   give it 1234.5 it will return $1,234.50

   example of use:
   dollar_format_number = dollars(123.45)

   there is 1 optional parameter or argument (preceded by a comma)
   optional argument:
   argument # 2 - size of output field, in characters
                  if this is too small, it's ignored
   dollar_format_number = dollars(123.45, 10)
  for REXX information, Sample Code, books see


  may be distributed provided this entire comment is included

dollars: /* procedure do not use procedure if this is external */

decimal  = "."
spacer   = ","
currency = "$"

out = ""
ctr = 0

if arg() < 1 then signal no_input

if datatype(arg(1)) <> "NUM"  then signal not_a_num

number   = arg(1)
size     = arg(2)

if datatype(size) = "NUM" | size = "" then nop
else signal bad_length

if number < 0 then number = number * -1

parse var number whole (decimal) fraction
whole = whole + 0

if length(whole) > 9 then signal too_big

do i = length(whole) to 1 by -1
   call join substr(whole,i,1)
end i

if pos(spacer,out) = 1 then out = substr(out,2)

if length(fraction)   > 2       then call round_fraction
if length(fraction)   = 1       then fraction = fraction"0"
if datatype(fraction) <> "NUM"  & fraction <> ""
   then signal not_a_num

if fraction = "" then out = currency""out""decimal"00"
else out = currency""out""decimal""fraction

if out <> "" & ,
   length(out) < size then out = copies(" ",size - length(out))out

return out

arg in
ctr = ctr + 1
if ctr = 3 then do
   ctr = 0
   in = spacer""in
out = in""out

say "must supply at least one input parm, a valid number"
return ""

say "must supply at least one input parm, a valid number"
return arg(1)

say "max length of input number is 9"
return arg(1)

say "length parameter, " arg(2) "must be numeric"
return arg(1)
    may be freely distributed
    provided that this notice is attached.
    I am an independant consultant and trainer.
numeric digits 2
fraction = fraction + 0
numeric digits 9
fraction = fraction + 0
fraction = left(fraction,2)
say fraction

Learn how to use all the features of REXX: REXX Programming Book for TSO (published 2012)

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