Compilare: user.cpp: In function ‘void inserare(trieNode*, char*)’: user.cpp:38:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(*w == strlen(w)){ ^ user.cpp: In function ‘bool delete_word(trieNode*, char*)’: user.cpp:51:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(*w == strlen(w)){ ^ user.cpp: In function ‘int QuerryWords(trieNode*, char*)’: user.cpp:69:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(*w == strlen(w)){ ^ user.cpp: In function ‘int QuerryPrefix(trieNode*, char*, int)’: user.cpp:82:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(*w == strlen(w) or node->tree[*w - 'a'] == NULL){ ^