(7) : error C2679: 二进制“<<”: 没有找到接受“std::string”类型的右操作数的运算符(或没有可接受的转换)
        VC8\include\ostream(650): 可能是“std::basic_ostream<_Elem,_Traits> &std::operator <<<char,std::char_traits<char>>(std::basic_ostream<_Elem,_Traits> &,const char *)”
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        VC8\include\ostream(697): 或“std::basic_ostream<_Elem,_Traits> &std::operator <<<char,std::char_traits<char>>(std::basic_ostream<_Elem,_Traits> &,char)”
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        VC8\include\ostream(735): 或“std::basic_ostream<_Elem,_Traits> &std::operator <<<std::char_traits<char>>(std::basic_ostream<_Elem,_Traits> &,const char *)”
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        VC8\include\ostream(782): 或“std::basic_ostream<_Elem,_Traits> &std::operator <<<std::char_traits<char>>(std::basic_ostream<_Elem,_Traits> &,char)”
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        VC8\include\ostream(906): 或“std::basic_ostream<_Elem,_Traits> &std::operator <<<std::char_traits<char>>(std::basic_ostream<_Elem,_Traits> &,const signed char *)”
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        VC8\include\ostream(913): 或“std::basic_ostream<_Elem,_Traits> &std::operator <<<std::char_traits<char>>(std::basic_ostream<_Elem,_Traits> &,signed char)”
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        VC8\include\ostream(920): 或“std::basic_ostream<_Elem,_Traits> &std::operator <<<std::char_traits<char>>(std::basic_ostream<_Elem,_Traits> &,const unsigned char *)”
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        VC8\include\ostream(927): 或“std::basic_ostream<_Elem,_Traits> &std::operator <<<std::char_traits<char>>(std::basic_ostream<_Elem,_Traits> &,unsigned char)”
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        VC8\include\ostream(168): 或“std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(std::basic_ostream<_Elem,_Traits> &(__cdecl *)(std::basic_ostream<_Elem,_Traits> &))”
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        VC8\include\ostream(174): 或“std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(std::basic_ios<_Elem,_Traits> &(__cdecl *)(std::basic_ios<_Elem,_Traits> &))”
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        VC8\include\ostream(181): 或“std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(std::ios_base &(__cdecl *)(std::ios_base &))”
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        VC8\include\ostream(188): 或“std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(std::_Bool)”
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        VC8\include\ostream(208): 或“std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(short)”
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        VC8\include\ostream(241): 或“std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(unsigned short)”
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        VC8\include\ostream(261): 或“std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(int)”
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        VC8\include\ostream(286): 或“std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(__w64 unsigned int)”
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        VC8\include\ostream(306): 或“std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(long)”
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        VC8\include\ostream(326): 或“std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(__w64 unsigned long)”
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        VC8\include\ostream(347): 或“std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(__int64)”
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        VC8\include\ostream(367): 或“std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(unsigned __int64)”
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        VC8\include\ostream(388): 或“std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(float)”
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        VC8\include\ostream(408): 或“std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(double)”
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        VC8\include\ostream(428): 或“std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(long double)”
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        VC8\include\ostream(448): 或“std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(const void *)”
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        VC8\include\ostream(468): 或“std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(std::basic_streambuf<_Elem,_Traits> *)”
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>
        ]
        试图匹配参数列表“(std::ostream, std::string)”时