View Compilation Error

0_0_34186346_919.cpp
0_0_34186346_919.cpp(8) : error C3867: “std::basic_string<char,std::char_traits<char>,std::allocator<char>>::length”:  函数调用缺少参数列表；请使用“&std::basic_string<char,std::char_traits<char>,std::allocator<char>>::length”创建指向成员的指针
0_0_34186346_919.cpp(8) : error C2446: “<”: 没有从“unsigned int (__thiscall std::basic_string<char,std::char_traits<char>,std::allocator<char>>::* )(void) throw() const”到“int”的转换
        没有使该转换得以执行的上下文
0_0_34186346_919.cpp(8) : error C2297: “<”: 非法，右操作数包含“unsigned int (__thiscall std::basic_string<char,std::char_traits<char>,std::allocator<char>>::* )(void) throw() const”类型