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标题: 怎样有条件的推出宏循环？ [打印本页]

作者: shiyiming 时间: 2006-8-3 19:57
标题: 怎样有条件的推出宏循环？
再宏当中为什么不可以用 %if %then leave;跳出宏循环呢？

作者: shiyiming 时间: 2006-8-4 11:28
标题: 用%goto
[code:01249]%macro check(parm);
%local status;
%if &parm= %then %do;
   %put ERROR:  You must supply a parameter to macro CHECK.;
   %goto exit;
%end;

more macro statements that test for error conditions

%if &status > 0 %then %do;
   %put ERROR:  File is empty.;
   %goto exit;
%end;

more macro statements that generate text

%put Check completed successfully.;
%exit: %mend check;[/code:01249]

作者: shiyiming 时间: 2006-8-4 16:08
标题: to talent598
因为leave不是宏语句,呵呵呵.

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