Main.cc:14:35: error: stray ‘\357’ in program for (int i = 0; i < s.size(); i += 2) { ^ Main.cc:14:36: error: stray ‘\274’ in program for (int i = 0; i < s.size(); i += 2) { ^ Main.cc:14:37: error: stray ‘\210’ in program for (int i = 0; i < s.size(); i += 2) { ^ Main.cc:14:38: error: stray ‘\357’ in program for (int i = 0; i < s.size(); i += 2) { ^ Main.cc:14:39: error: stray ‘\274’ in program for (int i = 0; i < s.size(); i += 2) { ^ Main.cc:14:40: error: stray ‘\211’ in program for (int i = 0; i < s.size(); i += 2) { ^ Main.cc: In function ‘int main()’: Main.cc:14:31: error: invalid use of member function ‘std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size() const [with _CharT = char; _Traits = std::char_traits; _Alloc = std::allocator; std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type = long unsigned int]’ (did you forget the ‘()’ ?) for (int i = 0; i < s.size(); i += 2) { ~~^~~~