Leading sign in integer values

hi ,
query is
data: a1 type i value 56 ,
      a2 type i value 60,
      res type i.
      res = a1 - a2.
      write:/ res.
when i do this o/p is 4-.
i want the sign at the begining like -4.
now i dont want to do any shift circular or like that cause that dosent solve my query as again i need to convert all the content to characters and so on ..
im looking for a function module or some logic which solves this purpose .
my version is 4.6 c .
thanks and regards,
vikky.

hi to all ,
data: a1 type i value 56 ,
      a2 type i value 60,
      res type i.
      res = a1 - a2.
      write:/ res .
CALL FUNCTION 'CLOI_PUT_SIGN_IN_FRONT'
CHANGING
    value        = res.
     write:/ res.
i have used that function module but it supports only character format .
i want directly to pass the integer number ..
anyway thanks guys for the effort ..
let me repeat there is no option for me to go for a character type declaration as im restircted for that ..
regards,
vikky.
Message was edited by: Vikky

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