Lexical Analysis 1 trial design, establishment and debug an analysis of this process, to deepen this understanding of law principles .2 test requirements 1) to be analyzed in simple language lexical* keyword: begin if then while do end all keywords are all lowercase. 2) operator and the community at:: =+*-/<<= <>>> = = ()# 3) in other words is the identifier (ID) and integer-type constants (NUM), through some formal definition: ID = letter (letter | digit)* NUM = digit digit* 4) by the blank spaces, tabs and line breaks composition, separated by spaces are generally used ID, NUM, operator, Fu sector and keywords, this analysis phase is often neglected .3 symbols corresponding to various kinds of words do not code as shown in the table

test.c
word.c
word.exe

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