Compilare: user.cpp: In function ‘void adauga(Trie*, char*, int)’: user.cpp:22:14: warning: NULL used in arithmetic [-Wpointer-arith] if(*v == NULL) return; ^ user.cpp: In function ‘void stergb(Trie*, char*)’: user.cpp:36:14: warning: NULL used in arithmetic [-Wpointer-arith] if(*v == NULL) return; ^ user.cpp: In function ‘void adaugSira(char*, int)’: user.cpp:46:28: warning: NULL used in arithmetic [-Wpointer-arith] for(int i = 0; v[i] != NULL; i++) ^ user.cpp: In function ‘void stergSirb(char*)’: user.cpp:54:28: warning: NULL used in arithmetic [-Wpointer-arith] for(int i = 0; v[i] != NULL; i++) ^ user.cpp: In function ‘int main()’: user.cpp:78:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sub.in", "r", stdin); ^ user.cpp:79:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sub.out", "w", stdout); ^ user.cpp:80:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &na); ^ user.cpp:83:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s", sir); ^ user.cpp:86:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &nb); ^ user.cpp:89:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s", sir); ^