Compilare: user.cpp: In function ‘BYTE AhoCorasick_Insert(AhoCorasick_Node*, BYTE*, DWORD, DWORD)’: user.cpp:49:3: warning: NULL used in arithmetic [-Wpointer-arith] CHECKRET(nod->next[next] != NULL, (BYTE)(-1)); ^ user.cpp: In function ‘BOOL DoEverything()’: user.cpp:155:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s", buf); ^ user.cpp:157:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%u", &numberOfWords); ^ user.cpp:160:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s", words[i]); ^ user.cpp: In function ‘int main()’: user.cpp:187:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ahocorasick.in", "r", stdin); ^ user.cpp:188:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ahocorasick.out", "w", stdout); ^