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969011_0_0_29137.cpp
969011_0_0_29137.cpp(19) : error C2676: 二进制“&” : “std::basic_istream<_Elem,_Traits>::_Myt”不定义该运算符或到预定义运算符可接收的类型的转换
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
969011_0_0_29137.cpp(19) : fatal error C1903: 无法从以前的错误中恢复；正在停止编译