* Return: -1, length not specified */

Return: list of declarations

* param: storage: null, only type specifier and qualifier accepted; */

* Return: pair of token(must be identifier) and it's type * if token is nullptr, then we are parsing abstract declarator * else, parsing dir

Have Read the '#'

* Return: true, variadic; */

Return the constructed postfix expression

* switch * jump stmt (skip case labels) * case labels * jump stmts * default jump stmt */