How to check whether a char string is in uppercase or not

Hi,
I know how to convert strings to change strings to uppercase or lowercase, but is there any function to check, beforehand, if the field is in uppercase, for instance ? The intention here is simply to spare processing in situations where the string is already in uppercase, and thus not needing any further processing (given I want to turn the string into uppercase.)
Thanks in advance,
Avraham

Hi Avraham ,
To check whether the string is in upper case or not use CA keyward.
To check try the following code ---
DATA : W_STRING(5) TYPE C,
W_ABCDE(26) TYPE C VALUE 'abcdefghijklmnopqrstuvwxyz'.
w_string = 'abcd'.
IF W_STRING CA W_ABCDE.
TRANSLATE w_string TO UPPER CASE.
ELSE.
MESSAGE 'It is a uppercase string' TYPE 'S'.
ENDIF.
Try this link this will definitely help you -
https://wiki.sdn.sap.com/wiki/display/ABAP/Validationofastringintermsof+case
Regards
Pinaki

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