Sample code to modify an internal table column?

[Former Member]

We have an internal table itab which looks like to have the following content:

A---B---C

1----3----

2----2----

We would like to get the column C value in this internal table itab by summing Column A and Column B, and then fill C column values into this internal table. We know that the program would looks like:

Loop itab into wa_itab.
  wa_itab-C = wa_itab-A + wa_itab-B.
End Loop.

Modify itab.

We know that the above program could not be right. Could ABAP experts here complete/correct the above program?

<REMOVED BY MODERATOR>

Edited by: Alvaro Tejada Galindo on Apr 8, 2008 1:04 PM

[Former Member]

This will Work fine.

>Loop itab into wa_itab.

> wa_itab-C = wa_itab-A + wa_itab-B.

>Modify itab index sy-tabix.

>End Loop.

OR

>field symbols: <wa_itab> type itab.

>Loop itab assigning <wa_itab>.

> <wa_itab>-C = <wa_itab>-A + <wa_itab>-B.

>endloop.

[Former Member]

hi Amandeep,

We use your code below:

Loop itab into wa_itab.

wa_itab-C = wa_itab-A + wa_itab-B.

Modify itab index sy-tabix.

End Loop.

But when activating the code, get the following error:

".", "AT ...", "AT SCREEN" or "AT ... VERSION ... ." expected after Loop.

What would be the reason and how to have it resolved?

Thanks!

[former_member194669]

It will be

Loop AT itab into wa_itab

a®

[Former Member]

hi Amandeep,

Unfortunately the "Modify itab index sy-tabix." statement make all itab contents blank! Do you know what's going on?

Thanks!

Loop itab into wa_itab.

wa_itab-C = wa_itab-A + wa_itab-B.

Modify itab index sy-tabix.

End Loop.

[former_member194669]

Try this way

Modify itab from wa_itab index sy-tabix.

a®

[Former Member]

Kevin,

just entered the modify statement inside the loop.

It will work

make sure while modifying pass the index number. Then the system will update the index

Cheers,

Chidanand

<REMOVED BY MODERATOR>

Edited by: Alvaro Tejada Galindo on Apr 8, 2008 1:17 PM

[Former Member]

Hi,

What is your requirement exactly, any how please see the below code it is working.

I got the output also.

data: begin of itab occurs 0,

a type i,

b type i,

c type i,

end of itab.

itab-a = '5'.

itab-b = '6'.

append itab.

clear itab.

itab-a = '2'.

itab-b = '3'.

append itab.

clear itab.

loop at itab .

itab-c = itab-a + itab-b.

modify itab.

endloop.

loop at itab.

write:/ itab-a, itab-b, itab-c.

endloop.

Thanks

Ganesh

[GrahamRobbo]

Hi Kev,

my suggestion

  DATA: itab TYPE TABLE OF mystruct,
        lref TYPE REF TO mystruct.

  LOOP AT itab REFERENCE INTO lref.
    lref->c = lref->a + lref->b.
  ENDLOOP.

Cheers

Graham Robbo