The following SAS program is submitted:
data WORK.TEMP;
length A B 3 X;
infile RAWDATA;
input A B X;
run;
What is the length of variable A?
A.3
B.8
C.WORK.TEMP is not created - X has an invalid length.
D.Unknown.
用SAS run了下，log里这样说 length A B 3 X; 这里expecting a numeric constant
什么的。答案选A，不知道为什么，有没有大侠可以解释下。
