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标题: 跟crackman做sas adv认证试题（7） [打印本页]

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作者: shiyiming    时间: 2010-11-16 21:05
标题: 跟crackman做sas adv认证试题（7）
From crackman's blog on Baidu


               
                <p><font size="4" face="宋体">The following SAS program is submitted:&nbsp;&nbsp;  <br>
  %let Value=9; <br>
  %let Add=5; <br>
  %let Newval=%eval(&amp;Value/&amp;Add);<br>
  %put &amp;Newval; <br>
<br>
What is the value of the macro variable&nbsp;&nbsp;  <br>
newval when the %PUT statement executes?  </font></p>
<p><br>
<font size="4" face="宋体">A.0.555<br>
<br>
B.2&nbsp;&nbsp;&nbsp;  <br>
<br>
C.1.8  <br>
<br>
D.1&nbsp;&nbsp;  </font></p>
<p><font size="4" face="宋体">答案是D<br>
%PUT statement shows that %EVAL discards the fractional part when it performs division on integers that would result in a fraction:<br>
<br>
如果要获得准确的结果应该选择函数%sysevalf替换%eval.<br>
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