标题: SAS advance exam question 7: Macro Variables [打印本页] 作者: shiyiming 时间: 2010-7-7 11:52 标题: SAS advance exam question 7: Macro Variables I am very confused about this Macro Variables question.
Which VAR statement successfully completes the program to produce a report containing four variables?
A. var %COLS1 %COLS2;
B. var %COLS1-%COLS2;
C. var %COLS1 Weight Height;
D. var Weight Height %COLS1;
I ran these SAS codes and found that D is correct. I am confused why C is not correct. It would be great if anyone would like to explain it a little bit.
^_^作者: shiyiming 时间: 2010-7-7 12:49 标题: Re: SAS advance exam question 7: Macro Variables After running the codes,
proc print data=SASHELP.CLASS;
var %COLS1 Weight Height;
run;
I found the error message from the log window.
13 proc print data=SASHELP.CLASS;
14 var %COLS1 Weight Height;
------
180
ERROR 180-322: Statement is not valid or it is used out of proper order.
15 run;
Does it means that Macro can only after the variables in this case?
Thanks in advance.作者: shiyiming 时间: 2010-7-8 08:27 标题: Re: SAS advance exam question 7: Macro Variables 是分号的问题,不加分号ACD都对
[code:3c6qqso9]%macro COLS1;
Name Age
%mend;
%macro COLS2;
Height Weight
%mend;[/code:3c6qqso9]作者: shiyiming 时间: 2010-7-8 08:56 标题: Re: SAS advance exam question 7: Macro Variables Yeah, it is the point that confused me. I ran the codes again, and found all options worked well just as your mentioned. Thanks millios!
^_^作者: shiyiming 时间: 2010-7-8 09:01 标题: Re: SAS advance exam question 7: Macro Variables 算日子你也该考完ADV了呀,还没去哪作者: shiyiming 时间: 2010-7-8 11:54 标题: Re: SAS advance exam question 7: Macro Variables I will take the ADV exam on this Friday morning.作者: shiyiming 时间: 2012-7-11 15:41 标题: Re: SAS advance exam question 7: Macro Variables 这上题目我在考ADV的时候遇到过，当时是猜的。哎。。。。
经教师一指点，原来如此！