文章目录 引言一、成员变量二、默认成员函数2.1 constructor2.2 copy constructor2.3 destructor2.4 operator= 三、迭代器3.1 begin3.2 end 四、元素访问4.1 operator[ ] 五、容量5.1 size5.2 capacity5.3 reserve5.4 resize 六、修改6.1 push_back6.2 ap