Eroare de compilare: user.cpp: In constructor ‘trie::trie()’: user.cpp:18:28: error: ‘memset’ was not declared in this scope memset(v,0,sizeof v); ^ user.cpp: In function ‘int pref(trie*, char*, int)’: user.cpp:68:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:72:21: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(lin,32,si); ^ user.cpp:82:25: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(lin,32,si); ^