How to find data type of field dynamically in abap

hi all,
I am hanged up in one issue. There an internal table is filled.
theres one field ,and i want to extract the data type of the field content.
Ex. i_tab is internal table having field var1.
let the content of var1 have data type same as that of matnr (material no.)
so here i want to extract this data type.
thanx in advance for efficient help

hi,
Use the statemnt
DESCRIBE FIELD
Use the edition   TYPE typ [COMPONENTS com]
More help use F1
example fropm F1 help
DATA: BEGIN OF struc1,
        comp1 TYPE c LENGTH 1,
        comp2 TYPE string,
        BEGIN OF struc2,
           comp1 TYPE c LENGTH 1,
          comp2 TYPE i,
        END OF struc2,
      END OF struc1,
      typ1 TYPE c LENGTH 1,
      comp1 TYPE i,
      typ2 TYPE c LENGTH 1,
      comp2 TYPE i.
DESCRIBE FIELD: struc1        TYPE typ1 COMPONENTS comp1,
                struc1-struc2 TYPE typ2 COMPONENTS comp2.
regards
prasanth

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Message was edited by: Suhas Saha

Hai.
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