Compilare: user.cpp: In member function ‘void Node::insert(char*)’: user.cpp:33:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(son[*cuv] == 0) ^ user.cpp:35:12: warning: array subscript has type ‘char’ [-Wchar-subscripts] son[*cuv] = new Node(); ^ user.cpp:39:11: warning: array subscript has type ‘char’ [-Wchar-subscripts] son[*cuv]->insert(cuv + 1); ^ user.cpp: In member function ‘void Node::erase(char*)’: user.cpp:50:11: warning: array subscript has type ‘char’ [-Wchar-subscripts] son[*cuv]->erase(cuv + 1); ^ user.cpp:52:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(son[*cuv]->countSons == 0 && son[*cuv]->cnt == 0) ^ user.cpp:52:43: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(son[*cuv]->countSons == 0 && son[*cuv]->cnt == 0) ^ user.cpp:54:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] delete son[*cuv]; ^ user.cpp:55:12: warning: array subscript has type ‘char’ [-Wchar-subscripts] son[*cuv] = NULL; ^ user.cpp: In member function ‘int Node::count(char*)’: user.cpp:68:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(son[*cuv] == 0) ^ user.cpp:73:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] return son[*cuv]->count(cuv + 1); ^ user.cpp: In member function ‘int Node::commonPrefixLength(char*, int)’: user.cpp:78:27: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(*cuv == 0 || son[*cuv] == 0) ^ user.cpp:83:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] return son[*cuv]->commonPrefixLength(cuv + 1, len + 1); ^