parse_term()
{
r = parse_factor();
if (get_token() == '*')
r *= parse_factor();
else
unget_token();
return r;
}
parse_expr()
{
r = parse_term();
if (get_token() == '+')
r += parse_term();
else
unget_token();
return r;
}
Should make * have higher precedence than +, right?
