Compilare: user.cpp: In member function ‘int HugeN::cmp(const HugeN&)’: user.cpp:26:24: warning: unused variable ‘n’ [-Wunused-variable] int i, cif1, cif2, n; ^ user.cpp: In function ‘int main()’: user.cpp:136:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sumall.in", "r", stdin); ^ user.cpp:137:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sumall.out", "w", stdout); ^