Compilare: main.cpp: In function 'int main()': main.cpp:14:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 14 | for(int i = 0;i<s.size();i++){ | ~^~~~~~~~~ main.cpp:23:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for(int i = 0;i<s.size();i++){ | ~^~~~~~~~~ main.cpp:9:11: warning: unused variable 'suma' [-Wunused-variable] 9 | int n,suma = 0; | ^~~~