Compilare: user.cpp: In function ‘void insert(Node*, char*)’: user.cpp:43:52: warning: operation on ‘word’ may be undefined [-Wsequence-point] insert(node->children[*word - 'a'], ++word); ^ user.cpp: In function ‘void remove(Node*, char*)’: user.cpp:60:56: warning: operation on ‘word’ may be undefined [-Wsequence-point] remove(node->children[*word - 'a'], ++word); ^ user.cpp: In function ‘int count(Node*, char*)’: user.cpp:83:61: warning: operation on ‘word’ may be undefined [-Wsequence-point] return count(node->children[*word - 'a'], ++word); ^ user.cpp: In function ‘int prefix(Node*, char*, int, int)’: user.cpp:99:92: warning: operation on ‘word’ may be undefined [-Wsequence-point] return prefix(node->children[*word - 'a'], ++word, occurences, currentLevel + 1); ^