设计、编制、调试一个典型的语法分析程序，实现对词法分析程序所提供的单词序列进行语法检查和结构分析，进一步掌握常用的语法分析中预测分析方法。-Design, preparation, debugging a typical parser, lexical analysis program to realize the word sequence provided by the grammar checking and structural analysis, to further understa