Compilare: main.cpp: In function 'void steluta(std::string)': main.cpp:10:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 10 | for(int i=0;i<ch.size();i++) | ~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:29:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for(int i=0;i<charr.size();i++) | ~^~~~~~~~~~~~~