Compilare: main.cpp: In function 'int main()': main.cpp:51:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 51 | for(int i = micut.length() - 1; i < s.length(); ++i) { | ~~^~~~~~~~~~~~ main.cpp:55:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 55 | if(i < s.length() - 1) | ~~^~~~~~~~~~~~~~~~