Compilare: main.cpp: In member function 'void Trie::adauga(Nod*, std::string&, int)': main.cpp:23:18: 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 ( idx == s.size() ) | ~~~~^~~~~~~~~~~ main.cpp: In member function 'int Trie::del(Nod*, std::string&, int)': main.cpp:54:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 54 | if ( idx == s.size() ) | ~~~~^~~~~~~~~~~ main.cpp: In member function 'int Trie::nrap(Nod*, std::string&, int)': main.cpp:80:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 80 | if ( idx == s.size() ) | ~~~~^~~~~~~~~~~ main.cpp: In member function 'int Trie::maxp(Nod*, std::string&, int)': main.cpp:100:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 100 | if ( idx == s.size() ) | ~~~~^~~~~~~~~~~