文件名称:cifa
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词法分析器的功能是输入源程序，输出单词符号。词法分析器的单词符号常常表示成以下的二元式(单词种别码，单词符号的属性值)。
识别保留字：if、int、for、while、do、return、break、continue；
单词种别码为1。
其他的都识别为标识符；单词种别码为2。
常数为无符号整形数；单词种别码为3。
运算符包括：+、－、*、/、=、>、<、>=、<=、!= ；
单词种别码为4。
分隔符包括：,、 、{、}、(、)、【、】； 单词种别码为5。-Lexical analyzer function is an input source, output word symbols. Lexical analyzer of the word symbol is often expressed as the following binary-type (other types of code word, the word symbol attribute values). Identification of reserved words: if, int, for, while, do, return, break, continue other kinds of code word for one. Others have identified as the identifier other kinds of code words is 2. Constant for a number of unsigned plastic other kinds of code words 3. Operators include: 2B !,-,*,/,=,
识别保留字：if、int、for、while、do、return、break、continue；
单词种别码为1。
其他的都识别为标识符；单词种别码为2。
常数为无符号整形数；单词种别码为3。
运算符包括：+、－、*、/、=、>、<、>=、<=、!= ；
单词种别码为4。
分隔符包括：,、 、{、}、(、)、【、】； 单词种别码为5。-Lexical analyzer function is an input source, output word symbols. Lexical analyzer of the word symbol is often expressed as the following binary-type (other types of code word, the word symbol attribute values). Identification of reserved words: if, int, for, while, do, return, break, continue other kinds of code word for one. Others have identified as the identifier other kinds of code words is 2. Constant for a number of unsigned plastic other kinds of code words 3. Operators include: 2B !,-,*,/,=,
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cifa.c