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<font class="title2"><b>练习</b></font> </p>
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7.4 修改图7．4中计算说明语句中的名字的类型及相对地址的翻译模式，以允许在形如D→id:T的说明中可用一串名字表来代替单个名字。<br>
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7.5 试编写一个程序，用来实现表7.5中给出的将布尔表达式翻译成三地址代码的语法制导定义。
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7.6 试编写一个程序，用来实现表76中给出的控制流语句的语法制导定义。
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7.7 试编写一个程序、用来实现7．5节中的回填算法。 <br>
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7.8 用7．3节的翻译模式将下列赋值语句译成三地址代码。 <br>
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<td>A[i,j]：= B[i,j] ＋C[A[k,l]] ＋D[i＋j]</td>
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