Compilare: user.cpp: In member function ‘long long int HugeN::operator%(long long int)’: user.cpp:43:22: warning: unused variable ‘aux’ [-Wunused-variable] long long r = 0, aux; ^ user.cpp: In function ‘int main()’: user.cpp:51:9: warning: unused variable ‘i’ [-Wunused-variable] int i; ^ user.cpp:49:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("next.in", "r", stdin); ^ user.cpp:50:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("next.out", "w", stdout); ^ user.cpp:53:12: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(s); ^ user.cpp:55:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld", &d); ^ /tmp/cc4IXMpa.o: In function `main': user.cpp:(.text.startup+0x59): warning: the `gets' function is dangerous and should not be used.