Compilare: user.cpp: In function ‘int main()’: user.cpp:90:34: 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:91:36: 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: In function ‘void citire()’: user.cpp:80:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%s",&tip,ch); ^ user.cpp: In function ‘void rem_from_trie()’: user.cpp:47:17: warning: ‘node2’ may be used uninitialized in this function [-Wmaybe-uninitialized] --node2->fin; ^