Compilare: user.cpp: In member function ‘void Trie::CreateTrie(std::__cxx11::string, int, Node*&)’: user.cpp:23:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (pCurr != S.size()) { ~~~~~~^~~~~~~~~~~ user.cpp:33:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (pCurr != S.size()) { ~~~~~~^~~~~~~~~~~ user.cpp:37:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0;i < NCurr->a.size() && !Found; ++ i) { ~~^~~~~~~~~~~~~~~~~ user.cpp: In member function ‘int Trie::getCountNumber(std::__cxx11::string, int, Node*)’: user.cpp:57:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (pCurr == S.size() ) { ~~~~~~^~~~~~~~~~~ user.cpp:63:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0;i < NCurr -> a.size() && !Found; ++ i) { ~~^~~~~~~~~~~~~~~~~~~ user.cpp: In member function ‘void Trie::deleteCurrentWord(std::__cxx11::string, int, Node*)’: user.cpp:77:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (pCurr == S.size() ) { ~~~~~~^~~~~~~~~~~ user.cpp:83:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0;i < NCurr -> a.size() && !Found; ++ i) { ~~^~~~~~~~~~~~~~~~~~~ user.cpp: In member function ‘int Trie::getCommonPrefix(std::__cxx11::string, int, Node*)’: user.cpp:93:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (pCurr == S.size()) { ~~~~~~^~~~~~~~~~~ user.cpp:102:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0;i < NCurr -> a.size() && !Found; ++ i) { ~~^~~~~~~~~~~~~~~~~~~ user.cpp: In member function ‘int Trie::getCountNumber(std::__cxx11::string, int, Node*)’: user.cpp:74:5: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In member function ‘int Trie::getCommonPrefix(std::__cxx11::string, int, Node*)’: user.cpp:114:5: warning: control reaches end of non-void function [-Wreturn-type] } ^