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michaelengel/ifdef.l

Created May 10, 2021 07:47
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ifdef.l
%{#include <stdio.h>
%}
%state INSOLUTION
%%
<INITIAL>@s { BEGIN(INSOLUTION); }
<INSOLUTION>@e { BEGIN(INITIAL); }
<INSOLUTION>. { }
<INITIAL>. { printf("%c", yytext[0]); }
%%
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