/media/sda-magnetic/david/Extern-Magnetic-2022-06-29/Extern01/Dokumente-2021-05-8/disk10-ab-2020-01-10/02-debian-pc2-work/informatik/bash-programming/lex-yacc-bash-etc/yacc23.cc

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