Compilare: main.cpp: In function 'void Add(Trie*&, char*, int)': main.cpp:40:20: warning: array subscript has type 'char' [-Wchar-subscripts] if(Nod -> Son[c] == NULL) ^ main.cpp:41:21: warning: array subscript has type 'char' [-Wchar-subscripts] Nod -> Son[c] = new Trie; ^ main.cpp:43:21: warning: array subscript has type 'char' [-Wchar-subscripts] Add(Nod -> Son[c], T + 1, i); ^ main.cpp: In function 'void BFS()': main.cpp:51:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < V.size(); i++) ~~^~~~~~~~~~ main.cpp: In function 'void Solve()': main.cpp:86:27: warning: array subscript has type 'char' [-Wchar-subscripts] while(Nod -> Son[c] == NULL && Nod != Root) ^ main.cpp:89:24: warning: array subscript has type 'char' [-Wchar-subscripts] if(Nod -> Son[c]) ^ main.cpp:91:31: warning: array subscript has type 'char' [-Wchar-subscripts] Nod = Nod -> Son[c]; ^