What will be the Structure of itab created with "LIKE TABLE OF sy-ucomm"

Question

Data fcode like table of sy-ucomm
The table thus created will have one column but it will not have any structure.
How can I write a code with this effect:
LOOP AT fcode.
  WRITE:/ fcode-????.
ENDLOOP.
This question is just out of my curiosity I undertsand that by altering the declaration like
Data begin of fcode occurs 0,
data ucomm like sy-ucomm,
end of fcode.
I will be able to name it. But out of the academic interest I want to know that without altering the decalation part can we do it

Answer 1

Hello Flora,
There are two points to be noted here -
1. the table you have created doesn't have a header line.
2. The table you have created doesn't have a "structure".
All internal tables declared with reference to a non-structural type / object have got only one field.
for example -
Data ITAB TYPE I OCCURS 0.
These internal tables have certain limitations. They cannot be displayed in an ALV Grid, for instance.
And since they do not have a <i>structure</i>, the hypen operator '-' doesn't really make sense. When you say SYST-UCOMM, you are referring to the field UCOMM in the structure SYST.
Hope that's clear.
Regards,
Anand Mandalika.