Compilare: user.cpp: In function ‘int adauga(trie*, char*)’: user.cpp:22:9: warning: unused variable ‘k’ [-Wunused-variable] int k =0; ^ user.cpp: In function ‘int main()’: user.cpp:80:29: 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:81:31: 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:86:29: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(sir,1100000,stdin); ^