Compilare: user.cpp: In function ‘int main()’: user.cpp:67:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0 ; i < lame.size() ; ++i) { ^ user.cpp:15:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("strmatch.in", "r", stdin); ^ user.cpp:16:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("strmatch.out", "w", stdout); ^