data lv_iter_taskname type i value 1.
data lv_str_init type string value 'TASK'.
data lv_str2_for_concat type string.
data lv_temp type string.

  do 100 times.
  lv_temp = lv_iter_taskname.
  CONCATENATE lv_str_init lv_temp into lv_str2_for_concat.
  add 1 to lv_iter_taskname.
  write:/ lv_str2_for_concat.
  clear lv_str2_for_concat.
  enddo.



*************************************************************************


data lv_i type i value 1.
data lv_str type string value 'TASK'.
data lv_str2 type string.
data lv_temp type string.




  do 100 times.
  lv_temp = lv_i.
  CONCATENATE lv_str lv_temp into lv_str2.
  add 1 to lv_i.
  write:/ lv_str2.
  clear lv_str2.
  enddo.