Compilare: user.cpp: In function ‘void afisare()’: user.cpp:36:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<cv.size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:41:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("text3.in","r",stdin); ^ user.cpp:42:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("text3.out","w",stdout); ^