Compilare: main.cpp: In function 'void adauga(trie*, std::string, int)': main.cpp:26:9: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | if(i==s.length()) | ~^~~~~~~~~~~~ main.cpp: In function 'int query(trie*, std::string, int)': main.cpp:41:9: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | if(i==s.length()) | ~^~~~~~~~~~~~ main.cpp: In function 'int prefix(trie*, std::string)': main.cpp:54:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 54 | for(i=0;i<s.length() && nod!=NULL;i++) | ~^~~~~~~~~~~ main.cpp: In function 'int sterge(trie*, std::string, int)': main.cpp:64:9: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 64 | if(i==s.length()) | ~^~~~~~~~~~~~