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0_0_8178707_4858.cpp
0_0_8178707_4858.cpp(6) : error C2664: “std::basic_string<_Elem,_Traits,_Ax>::basic_string(const std::basic_string<_Elem,_Traits,_Ax>::_Alloc &)” : 不能将参数 1 从“int”转换为“const std::basic_string<_Elem,_Traits,_Ax>::_Alloc &”
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>,
            _Ax=std::allocator<char>
        ]
        and
        [
            _Elem=char,
            _Traits=std::char_traits<char>,
            _Ax=std::allocator<char>
        ]
        原因如下: 无法从“int”转换为“const std::basic_string<_Elem,_Traits,_Ax>::_Alloc”
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>,
            _Ax=std::allocator<char>
        ]
        无构造函数可以接受源类型，或构造函数重载决策不明确