The followingSAS program is submitted:
dataWORK.TEMP;
length A B3 X;
infileRAWDATA;
input A BX;
run;
What is thelength of variable A?
A. 3
B. 8
C.WORK.TEMP isnot created - X has an invalid length.
D. Unknown.
请问为什么答案上写A是答案呢?
length A B 3 X; 里X没有被assign length
不是应该是C吗?



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