Compilare: main.cpp: In function 'void addWord(Trie*, int, std::string&)': main.cpp:42:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 42 | if (pos == s.size()) | ~~~~^~~~~~~~~~~ main.cpp:46:17: warning: array subscript has type 'char' [-Wchar-subscripts] 46 | if (nod->fii[lit] == nullptr) | ^~~ main.cpp:47:16: warning: array subscript has type 'char' [-Wchar-subscripts] 47 | nod->fii[lit] = new Trie; | ^~~ main.cpp:49:21: warning: array subscript has type 'char' [-Wchar-subscripts] 49 | addWord(nod->fii[lit], pos+1, s); | ^~~ main.cpp: In function 'bool delWord(Trie*, int, std::string&)': main.cpp:55:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 55 | if (pos == s.size()) | ~~~~^~~~~~~~~~~ main.cpp:62:25: warning: array subscript has type 'char' [-Wchar-subscripts] 62 | if (delWord(nod->fii[lit], pos+1, s)) | ^~~ main.cpp:63:16: warning: array subscript has type 'char' [-Wchar-subscripts] 63 | nod->fii[lit] = nullptr; | ^~~ main.cpp: In function 'int nrApWord(Trie*, int, std::string&)': main.cpp:73:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 73 | if (pos == s.size()) | ~~~~^~~~~~~~~~~ main.cpp:77:17: warning: array subscript has type 'char' [-Wchar-subscripts] 77 | if (nod->fii[lit]) | ^~~ main.cpp:78:32: warning: array subscript has type 'char' [-Wchar-subscripts] 78 | return nrApWord(nod->fii[lit], pos+1, s); | ^~~ main.cpp: In function 'int lcpWord(Trie*, int, std::string&)': main.cpp:85:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 85 | if (pos == s.size()) | ~~~~^~~~~~~~~~~ main.cpp:89:17: warning: array subscript has type 'char' [-Wchar-subscripts] 89 | if (nod->fii[lit]) | ^~~ main.cpp:90:31: warning: array subscript has type 'char' [-Wchar-subscripts] 90 | return lcpWord(nod->fii[lit], pos+1, s); | ^~~