Introduction - If you have any usage issues, please Google them yourself
Experimental requirements: 1. Word kinds of other coding requirements of the basic word operator, delimiter: a character one kind identifier: unification as a constant: the type of encoding Lexical analysis to create a symbol table in the course of their work, often scale, and output to a text file Lexical analysis of the final results to a text file output Complete functional testing of the design of lexical analyzer, and given the test data and results To increase the readability of the program, please make the appropriate explanatory notes in the program Finishing on the machine steps, sum up experience, and experience Carefully completed and timely submitted to the experiment report.