摘要: #include<iostream>using namespace std; class String;ostream& operator<<(ostream &out, const String&s);//引用计数器类class String_rep { friend class String; 阅读全文
posted @ 2016-08-09 09:13 请叫我小小兽 阅读(219) 评论(0) 推荐(0) 编辑