Compilare: main.cpp: In function 'int main()': main.cpp:18:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 18 | for(int i = 0; i < s.size(); i ++) | ~~^~~~~~~~~~ main.cpp:33:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | for(int i = 0; i < s.size(); i ++) | ~~^~~~~~~~~~ main.cpp:9:12: warning: unused variable 'poz' [-Wunused-variable] 9 | int n, poz; | ^~~