?? 9.5.3_e5.htm
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<img border="0" src="images/9_25_1.gif" align = left width="357" height="126">根據定義寫出圖２（a）中語句S的kill[S]。<p>
解析：d是唯一的定值，不管它是否到達開始點，它肯定到達該語句的結束點，它注銷了a在程序中的所有定值。所以: </p>
<p> <span style="FONT-SIZE: large">kill[S]=Da-399hhxb</span></td>
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