How to read fields of a structure or Table.

Hi,

I had a requirement where i will send a structure/table name into a Form(Subroutine). This form fills an internal table with all the fields in that structure/table .

Does any one could suggest any programming method to access the field names of structure/table.

Please don't suggest any database tables, as the structures iam going to send need not exist in database.

A quick reply is appreciated.

Thanks in Advance,

Anvitha.