Compilare: user.cpp: In function ‘int main()’: user.cpp:354:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("tort.in", "r", stdin); ^ user.cpp:355:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("tort.out", "w", stdout); ^ user.cpp:357:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%lld", &a, &b); ^ user.cpp: In member function ‘HugeN HugeN::operator/(const HugeN&)’: user.cpp:204:18: warning: ‘i’ is used uninitialized in this function [-Wuninitialized] for (i = x[i]; i >= 1; i --){ ^ user.cpp: In member function ‘HugeN HugeN::operator%(const HugeN&)’: user.cpp:226:18: warning: ‘i’ is used uninitialized in this function [-Wuninitialized] for (i = x[i]; i >= 1; i --){ ^