Question

I create a simple test for lex:

%{

#include
%}

%%

stop printf(“Stop command received\n”);

start printf(“Start command received\n”);

%%

name it as aaa, but I can’t use flex to compile it. Is there something wrong with my procedure? I just use flex example

Answer 1

#include without something to include is an error.

If you name it aaa, you probably need to do flex aaa, not flex example.