运行 ID: 78021

Main.cc: In function ‘int main()’:
Main.cc:10:48: error: no matching function for call to ‘max()’
     int max_digit = max({hundreds, tens, units});
                                                ^
In file included from /usr/include/c++/7/bits/char_traits.h:39:0,
                 from /usr/include/c++/7/ios:40,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iostream:39,
                 from Main.cc:1:
/usr/include/c++/7/bits/stl_algobase.h:219:5: note: candidate: template const _Tp& std::max(const _Tp&, const _Tp&)
     max(const _Tp& __a, const _Tp& __b)
     ^~~
/usr/include/c++/7/bits/stl_algobase.h:219:5: note:   template argument deduction/substitution failed:
Main.cc:10:48: note:   candidate expects 2 arguments, 1 provided
     int max_digit = max({hundreds, tens, units});
                                                ^
In file included from /usr/include/c++/7/bits/char_traits.h:39:0,
                 from /usr/include/c++/7/ios:40,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iostream:39,
                 from Main.cc:1:
/usr/include/c++/7/bits/stl_algobase.h:265:5: note: candidate: template const _Tp& std::max(const _Tp&, const _Tp&, _Compare)
     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
     ^~~
/usr/include/c++/7/bits/stl_algobase.h:265:5: note:   template argument deduction/substitution failed:
Main.cc:10:48: note:   candidate expects 3 arguments, 1 provided
     int max_digit = max({hundreds, tens, units});
                                                ^