56. The following SAS program is submitted:
%let a = cat;
%macro animal (a=frog);
%let a = bird;
%mend;
%animal (a=pig)
%put a is &a;
Which one of the following is written to the SAS log?
- a is &a
- a is cat
- a is pig
- a is bird
Correct answer: b
Q30. the following SAS program is submitted:
%let a=apple;
%macro fruit;
%let a = orange;
%mend;
%fruit
%put a is &a;
Which one of the following is written to the SAS log?
- a is apple
- a is orange
- a is &a
- a is
Correct answer: b
请大家帮我看看这两道题的区别。谢谢。