Compilare: user.cpp: In member function ‘void Trie::addWord(char*)’: user.cpp:36: warning: array subscript has type ‘char’ user.cpp:37: warning: array subscript has type ‘char’ user.cpp:39: warning: array subscript has type ‘char’ user.cpp: In member function ‘bool Trie::delWord(char*)’: user.cpp:47: warning: array subscript has type ‘char’ user.cpp:49: warning: array subscript has type ‘char’ user.cpp: In member function ‘int Trie::countWords(char*)’: user.cpp:64: warning: array subscript has type ‘char’ user.cpp:67: warning: array subscript has type ‘char’ user.cpp: In member function ‘int Trie::countPrefixes(char*)’: user.cpp:74: warning: array subscript has type ‘char’ user.cpp:77: warning: array subscript has type ‘char’ user.cpp: In member function ‘int Trie::lcp(char*, int)’: user.cpp:82: warning: array subscript has type ‘char’ user.cpp:84: warning: array subscript has type ‘char’