Compilare: user.cpp: In member function ‘void HugeN::atrib(int)’: user.cpp:19:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] x[++x[0]] = nr % 10; ^ user.cpp: In member function ‘int HugeN::cmp(const HugeN&)’: user.cpp:30:24: warning: unused variable ‘n’ [-Wunused-variable] int i, cif1, cif2, n; ^ user.cpp: In member function ‘HugeN HugeN::operator+(const HugeN&)’: user.cpp:78:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] temp.x[++temp.x[0]] = tr; ^ user.cpp: In member function ‘HugeN HugeN::operator-=(const HugeN&)’: user.cpp:94:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(x[x[0]] == 0) ^ user.cpp: In function ‘int main()’: user.cpp:103:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("arbsort.in", "r", stdin); ^ user.cpp:104:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("arbsort.out", "w", stdout); ^ user.cpp:107:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d ", &n); ^ user.cpp:108:10: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(p); ^ /tmp/cc2Pl30T.o: In function `main': user.cpp:(.text.startup+0x82): warning: the `gets' function is dangerous and should not be used.