Borderou de evaluare (job #107177)

Compilare: user.cpp: In function ‘int query(Trie*, char*)’: user.cpp:41:12: warning: NULL used in arithmetic [-Wpointer-arith] user.cpp: In function ‘int prefix(Trie*, char*, int)’: user.cpp:48:12: warning: NULL used in arithmetic [-Wpointer-arith] user.cpp: In function ‘int main()’: user.cpp:55:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:56:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:58:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]