0_0_39224450_25309.cpp 0_0_39224450_25309.cpp(15) : error C2039: “sync__with_stdio”: 不是“std::basic_ios<char,std::char_traits<char>>”的成员 0_0_39224450_25309.cpp(15) : error C3861: “sync__with_stdio”: 找不到标识符