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{
$$
=
sym[$l] ,
}
{
$$
=
$1
+ $3,
}
{
$$
=
$1
- $3,
}
{
$$
=
$1
* $3,
}
{
$$
=
$1
/ $3; }
{
$$
=
$2;
}
| expr | expr
i * i
I '(
expr
%%
int yyerror(char *s) {
fprintf(stderr, "%s\n", s);
return 0; }
int main(void) { yyparse(); return 0;
}
19
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