通过设计、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方法。

-By designing, developing, debugging parsing a typical procedure, the realization of the lexical analysis program provided by the word sequence and structure analysis of the syntax check, and further master the syntax analysis method commonly used.