Compilare: main.cpp: In function 'bool verif(std::string, std::string)': main.cpp:18:22: 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 < a.size(); i++){ | ~~^~~~~~~~~~ main.cpp:20:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 20 | while(j < b.size() && b[j] != a[i]){ | ~~^~~~~~~~~~ main.cpp:23:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | if(j == b.size()){ | ~~^~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:40:28: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 40 | if(s[i].size() > len){ | ~~~~~~~~~~~~^~~~~ main.cpp:43:34: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 43 | }else if(s[i].size() == len){ | ~~~~~~~~~~~~^~~~~~