Compilare: main.cpp: In member function 'bool MyString::operator<(const MyString&) const': main.cpp:19:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 19 | for(int i = 0;i < a.size();i++){ | ~~^~~~~~~~~~ main.cpp:20:31: warning: array subscript has type 'char' [-Wchar-subscripts] 20 | if(comparison[a[i]] < comparison[b[i]]){ | ^ main.cpp:20:50: warning: array subscript has type 'char' [-Wchar-subscripts] 20 | if(comparison[a[i]] < comparison[b[i]]){ | ^ main.cpp:22:37: warning: array subscript has type 'char' [-Wchar-subscripts] 22 | }else if(comparison[a[i]] > comparison[b[i]]){ | ^ main.cpp:22:56: warning: array subscript has type 'char' [-Wchar-subscripts] 22 | }else if(comparison[a[i]] > comparison[b[i]]){ | ^ main.cpp: In member function 'bool MyString::operator>(const MyString&) const': main.cpp:31:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 31 | for(int i = 0;i < a.size();i++){ | ~~^~~~~~~~~~ main.cpp:32:31: warning: array subscript has type 'char' [-Wchar-subscripts] 32 | if(comparison[a[i]] > comparison[b[i]]){ | ^ main.cpp:32:50: warning: array subscript has type 'char' [-Wchar-subscripts] 32 | if(comparison[a[i]] > comparison[b[i]]){ | ^ main.cpp:34:37: warning: array subscript has type 'char' [-Wchar-subscripts] 34 | }else if(comparison[a[i]] < comparison[b[i]]){ | ^ main.cpp:34:56: warning: array subscript has type 'char' [-Wchar-subscripts] 34 | }else if(comparison[a[i]] < comparison[b[i]]){ | ^ main.cpp: In function 'int32_t main()': main.cpp:61:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 61 | for(int i = 0;i < s.size();i++){ | ~~^~~~~~~~~~ main.cpp:62:24: warning: array subscript has type 'char' [-Wchar-subscripts] 62 | comparison[s[i]] = i + 1; | ^