View Compilation Error

852184_0_0_32678.cpp
852184_0_0_32678.cpp(64) : error C2558: class“std::basic_istream<_Elem,_Traits>” : 没有可用的复制构造函数或复制构造函数声明为“explicit”
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
852184_0_0_32678.cpp(69) : error C2582: “operator =”函数在“std::basic_istream<_Elem,_Traits>”中不可用
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]