dynamic assignment in expression

[birendra_chatterjee]

Hi Friends,

I have a requirement such that, based on some conditions, a = b + c, or a = b + d, or a = a - c, or a = a + c, and so on... All variables are of currency type (13,2).

Now, the logic of this condition-based equation comes from table ( i.e. if a = a - c, then 'a' , '-' and 'c' are maintained in a custom table).

I want to populate a text by concatenating 'a' '-' 'c' such that the text equals 'a - c'. Now I want to equate a with text (a = text )to get the value as that of (a - c).

If you can throw some light on this please...

Thanks in advance,

Birendra

[Former Member]

Hi,

You can achieve this by using field symbols... Just analyze the following sample code..

PARAMETER : w_a TYPE i
     , w_b TYPE i
     , w_symbol TYPE c
     .

DATA : w_text_A(10) TYPE c
      , w_text_B(10) TYPE c
      , w_c TYPE i
      .

FIELD-SYMBOLS : <FS_A>,<FS_B>,<FS_C>.

w_text_A = 'W_A'.

w_text_B = 'W_B'.

WRITE : w_a, w_b, w_c.
WRITE /.

ASSIGN (w_text_A) TO <FS_A>. " assigns the value of field name(w_a) contained in variable(w_text_a)

ASSIGN (w_text_b) TO <FS_B>. " assigns the value of field name(w_b) contained in variable(w_text_b)

CASE W_SYMBOL.
  WHEN '-'.
    W_C = <FS_A> - <FS_B>.
  WHEN '+'.
    W_C = <FS_A> + <FS_B>.
  WHEN '/'.
    W_C = <FS_A> / <FS_B>.
  WHEN '*'.
    W_C = <FS_A> * <FS_B>.
  WHEN OTHERS.
ENDCASE..



WRITE : w_a, w_b, w_c.

copy paste to SE38 and try.You will get what you want.....

Thanks and Regards,

Senthil Kumar Anantham..

[SuhaSaha]

The func. module 'EVAL_FORMULA' should help you.

[kesavadas_thekkillath]

Check this