Compilare: main.cpp: In function 'void act()': main.cpp:69:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<ord[i]->indici.size(); j++) ~^~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:77:42: 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:78:44: 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); ^