复件 23020078104068\input.txt ...................\lex.dsp ...................\lex.dsw ...................\lex.exe ...................\lex.l ...................\lex.ncb ...................\lex.opt ...................\lex.plg ...................\lex.yy.c ...................\output.txt ...................\实验二 报告.doc 复件 23020078104068