Hi all,
The code is :

options sgen;
%let one = two;
%let two = three;
%let three = four;
%let four = last;
%put &&&&&last;

Output is :

357   %put &&&&&last;
SYMBOLGEN:  && resolves to &.
SYMBOLGEN:  && resolves to &.
SYMBOLGEN:  && resolves to &.
SYMBOLGEN:  && resolves to &.
WARNING: Apparent symbolic reference LAST not resolved.
&last

Now i want, if SAS doesn't find the Macro variable  "last" then
instead of WARNING:, it should display ERROR: message and it should
not print the output as "&last" .
Is there any way that sas will not output "&last' in the log ??
Please help.
Thanks in Advance.

Thanks and Regards,
Amar Mundankar.

On Mar 29, 9:40=A0am, Amar Mundankar <amarmundan...@gmail.com> wrote:
> Hi all,
> The code is :
>
> options sgen;
> %let one =3D two;
> %let two =3D three;
> %let three =3D four;
> %let four =3D last;
> %put &&&&&last;
>
> Output is :
>
> 357 =A0 %put &&&&&last;
> SYMBOLGEN: =A0&& resolves to &.
> SYMBOLGEN: =A0&& resolves to &.
> SYMBOLGEN: =A0&& resolves to &.
> SYMBOLGEN: =A0&& resolves to &.
> WARNING: Apparent symbolic reference LAST not resolved.
> &last
>
> Now i want, if SAS doesn't find the Macro variable =A0"last" then
> instead of WARNING:, it should display ERROR: message and it should
> not print the output as "&last" .
> Is there any way that sas will not output "&last' in the log ??
> Please help.
> Thanks in Advance.
>
> Thanks and Regards,
> Amar Mundankar.

Hi all,
Does anybody have any idea about the above mentioned question?
Is it possible in SAS or not???
Please help.

Regards,
Amar Mundankar.

You will need to test that yourself.
You can use the %SYMEXIST macro function to test if a macro variable
exists.
If you are inside a macro then use it in a %IF or other conditional
macro statement.
Otherwise try using %SYSFUNC with the IFC function.  For example look
at output of this code:

%let x=3Dxxx;
%put %sysfunc(IFC(%symexist(Y),%nrstr(&Y),NOT FOUND));
%put %sysfunc(IFC(%symexist(X),%nrstr(&X),NOT FOUND));


On Apr 1, 1:10=A0am, Amar Mundankar <amarmundan...@gmail.com> wrote:
> On Mar 29, 9:40=A0am, Amar Mundankar <amarmundan...@gmail.com> wrote:
>
>
>
>
>
> > Hi all,
> > The code is :
>
> > options sgen;
> > %let one =3D two;
> > %let two =3D three;
> > %let three =3D four;
> > %let four =3D last;
> > %put &&&&&last;
>
> > Output is :
>
> > 357 =A0 %put &&&&&last;
> > SYMBOLGEN: =A0&& resolves to &.
> > SYMBOLGEN: =A0&& resolves to &.
> > SYMBOLGEN: =A0&& resolves to &.
> > SYMBOLGEN: =A0&& resolves to &.
> > WARNING: Apparent symbolic reference LAST not resolved.
> > &last
>
> > Now i want, if SAS doesn't find the Macro variable =A0"last" then
> > instead of WARNING:, it should display ERROR: message and it should
> > not print the output as "&last" .
> > Is there any way that sas will not output "&last' in the log ??
> > Please help.
> > Thanks in Advance.
>
> > Thanks and Regards,
> > Amar Mundankar.
>
> Hi all,
> Does anybody have any idea about the above mentioned question?
> Is it possible in SAS or not???
> Please help.
>
> Regards,
> Amar Mundankar.- Hide quoted text -
>
> - Show quoted text -