Compilare: main.cpp: In function 'void add(Trie*, std::string, int, int)': main.cpp:25:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | if(poz!=s.size()) | ~~~^~~~~~~~~~ main.cpp: In function 'void dell(Trie*, std::string, int)': main.cpp:39:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | if(poz!=s.size()) | ~~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:67:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 67 | for(int j=0;j<s.size();j++) | ~^~~~~~~~~ main.cpp:75:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 75 | for(int j=0;j<=s.size();j++) | ~^~~~~~~~~~