程序设计语言小程序-prolog lex

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his document explains how to construct a compiler using lex and yacc. Lex and yacc are tools used to generate lexical analyzers and parsers. I assume you can program in C and understand data structures such as linked-lists and trees. The Overvie

一个词法分析程序，对所给出的程序可分析出关键字、数字（整数、小数、科学计数法数字）、定义的识别符、分界符、分隔符 ，并带有lex程序。-A lexical analysis program, the program is proposed to analysis of keyword, digital ( integer, decimal, scientific notation definition digital ), identifiers, delimiters, separator,