Compilare: main.cpp: In function 'int main()': main.cpp:22:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | for (int i = 0; i < s.length(); i++) | ~~^~~~~~~~~~~~ main.cpp:23:24: warning: array subscript has type 'char' [-Wchar-subscripts] 23 | elof_s[s[i]]++; | ^ main.cpp:25:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | for (int i = 0; i < t.length(); i++) | ~~^~~~~~~~~~~~ main.cpp:26:24: warning: array subscript has type 'char' [-Wchar-subscripts] 26 | elof_t[t[i]]++; | ^