macro fail - correction needed

[PierreYvesILY]

dear SAS experts,

I need to write a simple macro to calculate:

• the current date
• the day before the current date

and use them afterwards in the programm.

I wrote:

/* macro-code fuer den Auswertungstag */

%macro auswert;

%global Date_of_today;

%let Date_of_today=%sysfunc(today());

%mend auswert;

%auswert;

%put &Date_of_today.;

%macro Auswertungstag;

Auswertungstag=&Date_of_today.-1;

%mend Auswertungstag;

%Auswertungstag;

/* Der Monatszeitraum fängt an, mit dem Vormonat von dem Auswertungstag */

%put &Auswertungstag.;

but I have this error message in the log:

/* macro-code fuer den Auswertungstag */

27 %macro auswert;

28 %global Date_of_today;

29 %let Date_of_today=%sysfunc(today());

30 %mend auswert;

31 %auswert;

32 %put &Date_of_today.;

21930

33

34 %macro Auswertungstag;

35 Auswertungstag=&Date_of_today.-1;

36 %mend Auswertungstag;

37 %Auswertungstag;

NOTE: Line generated by the invoked macro "AUSWERTUNGSTAG".

37 Auswertungstag=&Date_of_today.-1;

______________

180

ERROR 180-322: Statement is not valid or it is used out of proper order.

38

39 %put &Auswertungstag.;

WARNING: Apparent symbolic reference AUSWERTUNGSTAG not resolved.

&Auswertungstag.

what do I do wrong?

can someone send me the correct script?

thanks a lot for any help

regards

PY

[andreas_lds · Accepted solution]

You are missing the %let-statement and %eval - in macro language required to perform calculations. So

Auswertungstag=&Date_of_today.-1;

should be

%let Auswertungstag= %eval(&Date_of_today.-1);

[PierreYvesILY]

thanks a lot

[Kurt_Bremser]

First of all, these are just simple macro variable assignments, you do not need a macro definition for that.

You can do it in open code:

%let Date_of_today=%sysfunc(today());
%let Auswertungstag=%eval(&Date_of_today.-1);

so you also don't need the %global statement (which is missing in your second macro, causing WARNING: Apparent symbolic reference AUSWERTUNGSTAG not resolved).

If you find you need that repeatedly, put it in your autoexec, or save it as a .sas file to use in a %include.

[PierreYvesILY]

Danke dir