/media/sda-magnetic/david/Extern-Magnetic-2022-06-29/Extern01/Dokumente-11-2021-07-05/informatik-math/informatik2/lex-yacc-bash-etc/yacc13.cc

%{
#include <ctype.h>
#include <stdio.h>
%}
%token NUMBER
%%
lines               :   lines expr '\n' {printf("%d\n", $2);}
                    |   lines '\n'
                    ;
expr                :   expr '+' term {$$ = $1+$3;}
                    |   expr '-' term {$$ = $1-$3;}
                    |   term
                    ;
term                :   term '*' factor {$$ = $1*$3;}
                    |   term '/' factor {$$ = $1/$3;}
                    |   factor
                    ;
factor              :   '(' expr ')'    {$$ = $2;}
                    |   NUMBER
                    ;