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浮华童话080 发表于 2013-9-25 22:26:55 |AI写论文

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程序如下:

%macro test1(arrv,gr);

  data _null_;

   array vars (*)$ &arrv. ;
   call symputx ("dim_exposure", dim(vars));
   do i=1 to dim(vars);
   call symputx (cats ("exposure_",i),vname(vars(i)));
   end;
   run;

   data t;
   set t;
   %do i=1 %to &dim_exposure;
   if count (renal_diag, "&&exposure_&i")>0 then gr_nu= &gr. ;
   %end;
   run;
%mend test1;

%test1 (arrv=a11 b11.2 c11, gr=1);

错误如下:

40       a11 b11.2 c11
               _____
               22
               201
WARNING: Apparent symbolic reference DIM_EXPOSURE not resolved.
ERROR: A character operand was found in the %EVAL function or %IF condition where a numeric operand is required. The condition was:
      &dim_exposure
ERROR: The %TO value of the %DO I loop is invalid.
ERROR: The macro TEST1 will stop executing.
ERROR 22-322: Syntax error, expecting one of the following: a name, (, -, :, ;, _ALL_, _CHARACTER_, _CHAR_, _NUMERIC_.

ERROR 201-322: The option is not recognized and will be ignored.

请教高人