跟crakman做sas base认证试题（57）

shiyiming

From crackman's blog on Baidu


               
                <p><font size="3">57.Given the SAS data set WORK.ONE: <br>
<br>
&nbsp;&nbsp;  N&nbsp;&nbsp;  BeginDate<br>
&nbsp;&nbsp;  -&nbsp;&nbsp;  ---------<br>
&nbsp;&nbsp;  1&nbsp;&nbsp;  09JAN2010<br>
&nbsp;&nbsp;  2&nbsp;&nbsp;  12JAN2010<br>
<br>
The following SAS program is submitted:<br>
<br>
data WORK.TWO;<br>
&nbsp;&nbsp;&nbsp;&nbsp;  set WORK.ONE; <br>
&nbsp;&nbsp;&nbsp;&nbsp;  Day=&lt;_insert_code_&gt;; <br>
&nbsp;&nbsp;&nbsp;&nbsp;  format BeginDate date9.;<br>
run;<br>
<br>
The data set WORK.TWO is created, where Day would be 1 for Sunday, 2 for Monday, 3 for Tuesday, ... :<br>
<br>
WORK.TWO <br>
<br>
&nbsp;&nbsp;  N&nbsp;&nbsp;  BeginDate&nbsp;&nbsp;  Day <br>
&nbsp;&nbsp;  -&nbsp;&nbsp;  ---------&nbsp;&nbsp;  --- <br>
&nbsp;&nbsp;  1&nbsp;&nbsp;  09JAN2010&nbsp;&nbsp;&nbsp;&nbsp;  1 <br>
&nbsp;&nbsp;  2&nbsp;&nbsp;  12JAN2010&nbsp;&nbsp;&nbsp;&nbsp;  4 <br>
<br>
Which expression successfully completed the program and creates the variable Day?</font></p>
<p><font size="3">&nbsp;&nbsp;&nbsp;&nbsp;  A. day(BeginDate)<br>
&nbsp;&nbsp;&nbsp;&nbsp;  B. weekday(BeginDate)<br>
&nbsp;&nbsp;&nbsp;&nbsp;  C. dayofweek(BeginDate) <br>
&nbsp;&nbsp;&nbsp;&nbsp;  D. getday(BeginDate,today())</font></p>
<p><font size="3">Answer: B</font></p>
<p><font size="3">这里考察的是函数weekday的用法。<br>
此函数是活的某日期中的某天在一周星期中的数值。星期天就是1，星期六就是7。</font></p>
<p><font size="3">其他选项中的函数SAS认为是错误的。</font></p> <a href="http://hi.baidu.com/crack%5Fman/blog/item/2ed0b19d523e10186f068c2d.html">阅读全文</a>
               
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