Compilare: user.cpp: In function ‘int main()’: user.cpp:161:11: warning: division by zero [-Wdiv-by-zero] x /= 0; ^ user.cpp:147:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("secv8.in", "r", stdin); ^ user.cpp:148:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("secv8.out", "w", stdout); ^