Compilare: main.cpp: In constructor 'trieNode::trieNode()': main.cpp:21:48: warning: passing NULL to non-pointer argument 2 of 'void* memset(void*, int, size_t)' [-Wconversion-null] memset(children, NULL, sizeof(children)); ^ main.cpp: In function 'void Insert(trieNode*, std::__cxx11::string, int)': main.cpp:32:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<key.size(); i++) ~^~~~~~~~~~~ main.cpp: In function 'trieNode* Delete(trieNode*, std::__cxx11::string, int)': main.cpp:60:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (depth == key.size()) ~~~~~~^~~~~~~~~~~~~