Compilare: main.cpp: In function 'void reverse()': main.cpp:73:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0;j < top -> siruri.size();++j) ~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void Read()': main.cpp:59:40: 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); ^ main.cpp:60:42: 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); ^ main.cpp:61:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%s", a), scanf("%d", &n); ^ main.cpp:61:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] main.cpp:63:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%s", t), insert(T, t, i); ^