Exp.yacc

%{
	//YACC with LEX
#include<stdio.h>
#include<stdlib.h>
int yylex(void);
void yyerror(char*);
%}


%start S
%token L R NUM
%left LOGICAL_AND LOGICAL_OR LOGICAL_NOT LOGICAL_EXOR
%left REL_EQ REL_GE REL_LT REL_GT REL_LE
%left BIT_AND BIT_OR BIT_EXOR
%left SHIFT_LEFT SHIFT_RIGHT

%%

S : E { $$ = $1; printf("\n Result: %d", $$); }


E :   E LOGICAL_AND E { $$ = $1&&$3; printf("\n %d", $$);}
	| E LOGICAL_OR E { $$ = $1||$3; printf("\n %d", $$);}
	| LOGICAL_NOT E { $$ = ~$2; printf("\n %d", $$);}
	| E LOGICAL_EXOR E { $$ = $1^$3; printf("\n %d", $$);}

	| E BIT_AND E { $$ = $1&$3; printf("\n %d", $$);}
	| E BIT_OR E { $$ = $1|$3; printf("\n %d", $$);}
	| E BIT_EXOR E { $$ = $1^$3; printf("\n %d", $$);}

	| E REL_EQ E { $$ = $1==$3; printf("\n %d", $$);}
	| E REL_GE E { $$ = $1>=$3; printf("\n %d", $$);}
	| E REL_LE E { $$ = $1<=$3; printf("\n %d", $$);}
	| E REL_GT E { $$ = $1>$3; printf("\n %d", $$);}
	| E REL_LT E { $$ = $1<$3; printf("\n %d", $$);}

	| E SHIFT_LEFT E { $$ = $1<<$3; printf("\n %d", $$);}
	| E SHIFT_RIGHT E { $$ = $1>>$3; printf("\n %d", $$);}


	| L E R {$$ = $2;}
	| NUM {$$ = $1;}


%%

int main()
{
	return (yyparse());
	return 0;
}

void yyerror(char *S)
{
	fprintf(stderr, "%s\n", S);
}

yywrap()
{
	return 1;
}