Compilare: main.cpp: In function 'void addWord(Trie*, int, std::string&)': main.cpp:43:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 43 | if (pos == s.size()) | ~~~~^~~~~~~~~~~ main.cpp:47:17: warning: array subscript has type 'char' [-Wchar-subscripts] 47 | if (nod->fii[lit] == nullptr) | ^~~ main.cpp:48:16: warning: array subscript has type 'char' [-Wchar-subscripts] 48 | nod->fii[lit] = new Trie; | ^~~ main.cpp:50:21: warning: array subscript has type 'char' [-Wchar-subscripts] 50 | addWord(nod->fii[lit], pos+1, s); | ^~~ main.cpp: In function 'bool delWord(Trie*, int, std::string&)': main.cpp:56:12: 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:68:25: warning: array subscript has type 'char' [-Wchar-subscripts] 68 | if (delWord(nod->fii[lit], pos+1, s)) | ^~~ main.cpp:70:16: warning: array subscript has type 'char' [-Wchar-subscripts] 70 | nod->fii[lit] = nullptr; | ^~~ main.cpp: In function 'int nrApWord(Trie*, int, std::string&)': main.cpp:83:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 83 | if (pos == s.size()) | ~~~~^~~~~~~~~~~ main.cpp:87:17: warning: array subscript has type 'char' [-Wchar-subscripts] 87 | if (nod->fii[lit]) | ^~~ main.cpp:88:32: warning: array subscript has type 'char' [-Wchar-subscripts] 88 | return nrApWord(nod->fii[lit], pos+1, s); | ^~~ main.cpp: In function 'int lcpWord(Trie*, int, std::string&)': main.cpp:95:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 95 | if (pos == s.size()) | ~~~~^~~~~~~~~~~ main.cpp:99:17: warning: array subscript has type 'char' [-Wchar-subscripts] 99 | if (nod->fii[lit]) | ^~~ main.cpp:100:31: warning: array subscript has type 'char' [-Wchar-subscripts] 100 | return lcpWord(nod->fii[lit], pos+1, s); | ^~~