一个递归下降分析程序,实现对词法分析程序所提供的单词序列的语法检查和结构分析-Preparation of a recursive descent parser, lexical analyzer to achieve word sequence provided by the syntax checking and structural analysis.

运用递归下降子程序法，实现整数四则运算表达式的语法分析程序。如果输入的表达式分析正确，则输出表示分析正确的信息；否则，输出表示分析错误的信息。-Subroutine using recursive descent method to achieve parser integer arithmetic expressions. If the expression entered the analysis is correct, then the output indicates the corre

编制一个递归下降分析程序，实现对词法分析程序所提供的单词序列的语法检查和结构分析。-The preparation of a recursive descent parser, syntax checking and word structure to achieve lexical analysis program provided by sequence analysis.