[求助] 问一SAS 考点(附题)

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我都不清楚这两题想考的是什么? 类似但答案不同,请大家帮忙.....

1.The contents of raw data file EMPLOYEE are listed below:
----|----10---|----20---|----30
Ruth 39 11
Jose 32 22
Sue 30 33
John 40 44
The following SAS program is submitted:
data test;
infile 'employee';
input employee_name $1-4;
if employee_name ='Sue' then input age 7-8;
else input idnum 10-11;
run;
Which one of the following values does the variable AGE contain when the name of the employee is "Sue"?
A 30
B 33
C 40
D .(missing numeric value)

The result is C.

2.The contents of raw data file EMPLOYEE are listed below:
----|----10---|----20---|----30
Ruth 39 11
Jose 32 22
Sue 30 33
John 40 44
The following SAS program is submitted:
data test;
infile 'employee';
input employee_name $1-4;
if employee_name ='Ruth' then input idnum 10-11;
else input age 7-8;
run;
Which one of the following values does the variable IDNUM contain when the name
of the employee is "Ruth"
A 11
B 22
C 32
D .(missing numeric value)

The result is B

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关键词：following Employee Variable contents Contain 求助 SAS 考点

First, the two programs test the same point.

Second, the test point is below:
The first input statment read one record.
And the second input statement will read next record.

If you want to read the same line, you should use trailing @, which will hold current record.
e.g: input employee_name $1-4 @;

I am lost.

I know if no trailing @, will read next record :idnum or age, however,how to deal with next record :name? we can omit it ?

看明白了，呵呵，谢谢啊

多亏这么前辈了