Compilare: user.cpp: In function ‘int main()’: user.cpp:77:32: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[25]’ [-Wformat=] scanf("%d %s\n",&tip,&s); ^ user.cpp: In function ‘int nrap(trie*, char*)’: user.cpp:59:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:70:33: 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:71:35: 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); ^ user.cpp:77:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %s\n",&tip,&s); ^