Compilare: user.cpp: In function ‘bool Delete(Trie*, char*)’: user.cpp:43:16: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] if(node->Count == 0 & node->nr_Sons == 0 & node != T) ^ user.cpp:43:49: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] if(node->Count == 0 & node->nr_Sons == 0 & node != T) ^ user.cpp: In function ‘int main()’: user.cpp:65:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("trie.in", "r", stdin); ^ user.cpp:66:23: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(line, 23, stdin); ^ user.cpp:75:23: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(line, 23, stdin); ^