View Compilation Error

0_0_2766620_1860.cpp
0_0_2766620_1860.cpp(11) : error C2783: “std::basic_string<_Elem,_Traits,_Ax> std::bitset<_Bits>::to_string(void) const” : 未能推导出“_Elem”的模板参数
        with
        [
            _Bits=20
        ]
        VC\include\bitset(282) : 参见“std::bitset<_Bits>::to_string”的声明
        with
        [
            _Bits=20
        ]
0_0_2766620_1860.cpp(11) : error C2783: “std::basic_string<_Elem,_Traits,_Ax> std::bitset<_Bits>::to_string(void) const” : 未能推导出“_Tr”的模板参数
        with
        [
            _Bits=20
        ]
        VC\include\bitset(282) : 参见“std::bitset<_Bits>::to_string”的声明
        with
        [
            _Bits=20
        ]
0_0_2766620_1860.cpp(11) : error C2783: “std::basic_string<_Elem,_Traits,_Ax> std::bitset<_Bits>::to_string(void) const” : 未能推导出“_Alloc”的模板参数
        with
        [
            _Bits=20
        ]
        VC\include\bitset(282) : 参见“std::bitset<_Bits>::to_string”的声明
        with
        [
            _Bits=20
        ]