Compilare: main.cpp: In function 'int main()': main.cpp:10:10: 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(i=0;i<b.size();i++){ | ~^~~~~~~~~ main.cpp:12:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 12 | if(i >= a.size()) | ~~^~~~~~~~~~~ main.cpp:14:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 14 | if(i >= a.size()) | ~~^~~~~~~~~~~ main.cpp:14:7: warning: suggest explicit braces to avoid ambiguous 'else' [-Wdangling-else] 14 | if(i >= a.size()) | ^ main.cpp:22:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | for(i=0;i<v.size();i++) | ~^~~~~~~~~