Compilare: user.cpp: In member function ‘long long int& HugeN::operator%(long long int)’: user.cpp:79:15: warning: reference to local variable ‘r’ returned [-Wreturn-local-addr] long long r; ^ user.cpp: In function ‘int main()’: user.cpp:90:34: 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:91:36: 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:93:12: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(s); ^ user.cpp:95:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%lld",&k); ^ user.cpp:97:8: warning: ‘r’ is used uninitialized in this function [-Wuninitialized] k=k-rest; ^ /tmp/cc9fcamw.o: In function `main': user.cpp:(.text.startup+0x59): warning: the `gets' function is dangerous and should not be used.