向高手们请教一下SAS Adv 153题(A00-212)的Question 8:
The following SAS program is submitted:
data temp;
length 1 b 3 x;
infile 'file reference';
input a b x;
run;
What is the result?
A. The data set TEMP is not created because variables A and B have invalid lengths
B. The data set TEMP is created, but variable X is not created
C. The data set TEMP is not created because variable A has an invalid length
D. The data set TEMP is created and variable X has a length of 8
为什么答案是B 呢? (修改了一下,答案是B不是C...呼呼)
那个"length 1 b 3 x;" 不对吧?
谢谢!