编译原理实验：程序段的单词识别。：给定某种语言的语法规则，生成识别该语言单词的确定的有穷自动机（DFA），然后通过该DFA对该语言的程序段进行单词识别，给出识别的单词序列，每个单词用二元式表示-Compiler principle experiment: block word recognition. : Given a language grammar rules to generate finite automata (DFA) identify the word of the language and word recognition, and then through the block of the language of the DFA given the recognition sequence of words, each word expressed in binary type