Compilare: user.cpp: In function ‘void read()’: user.cpp:80:36: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[23]’ [-Wformat=] while(scanf("%d %s",&task,&word)== 2) ^ user.cpp:77:33: 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:78:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("trie.out","w",stdout); ^