%{ #include <stdio.h> %} %% [a-zA-Z]+ { printf("IDENTIFIER\n"); } .|\n { /* ignore other chars */ } %% int main(void) { yylex(); return 0; }
Standard input is empty
Standard output is empty
ERROR: /home/39KUYD/prog:14:1: Syntax error: Unexpected end of file ERROR: '$runtoplevel'/0: Undefined procedure: program/0 Exception: (3) program ? EOF: exit