%{ #include <stdio.h> %} %% abc printf("ABC"); // Convert 'abc' to 'ABC' .|\n printf("%c", yytext[0]); // Print any other character as it is %% int main() { yylex(); return 0;
abc
Standard output is empty
ERROR: /home/Chs0z9/prog:12:13: Syntax error: Unexpected end of file ERROR: '$runtoplevel'/0: Undefined procedure: program/0 Exception: (3) program ? EOF: exit