输入：一段任意的程序（字符串）。

输出：相应的属性字序列。

要求：⒈不处理说明部分，但属性字的符号类除了编码外，应包含更多的信息（如运算符的优先级等）；

⒉小子集中包含的符号类应有典型性，且尽可能丰富；

⒊为了使用方便和便于阅读，应有帮助信息，说明可以有哪些符号，属性字的结构如何等；

说明；⒈为了直观起见，属性字中的符号值可以是符号本身，而不是助忆符；

⒉符号的种类以及符号的编码是事先规定的，可考虑扩充的可能性。

-input : a random procedure (string). Output : the attributes of the corresponding word sequence. Requirements : Peak/103 not deal with narrative, but the characters attribute category in addition to coding symbols, should contain more information (such as Operators of priority, etc.); Focus on the local boy category contains the symbols should be typical, and as rich as possible; Prozac is easy to use and easy to read, the information should help that could be what symbols, characters attributes of the structure; ; Peak/103 intuitive sake, the word attribute values can be symbols symbol itself, and not help recalling website; the same year, the type of symbols and symbol coding is the advance may consider the possibility of expansion.