Compilare: main.cpp: In function 'void Add(Trie*, int)': main.cpp:19:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 19 | if(pos==s.size()) | ~~~^~~~~~~~~~ main.cpp: In function 'bool Delete(Trie*, int)': main.cpp:34:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | if(pos==s.size()) | ~~~^~~~~~~~~~ main.cpp: In function 'int Search(Trie*, int)': main.cpp:56:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 56 | if(pos==s.size()) | ~~~^~~~~~~~~~ main.cpp: In function 'int Lg(Trie*, int)': main.cpp:70:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 70 | if(pos==s.size() || !nod->leg[ch]) | ~~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:79:10: warning: variable 'ok' set but not used [-Wunused-but-set-variable] 79 | bool ok; | ^~