Compilare: user.cpp: In function ‘int main()’: user.cpp:34:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] f2[j] = (int)f2[j] + (int)f3[j] + (int)cat; ^ user.cpp:34:34: warning: array subscript has type ‘char’ [-Wchar-subscripts] f2[j] = (int)f2[j] + (int)f3[j] + (int)cat; ^ user.cpp:34:47: warning: array subscript has type ‘char’ [-Wchar-subscripts] f2[j] = (int)f2[j] + (int)f3[j] + (int)cat; ^ user.cpp:35:37: warning: array subscript has type ‘char’ [-Wchar-subscripts] cat = char((int)f2[j] / (int)10); ^ user.cpp:36:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] f2[j] %= (int)10; ^ user.cpp:48:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] f3[j] = (int)f2[j] + (int)f3[j] + (int)cat; ^ user.cpp:48:34: warning: array subscript has type ‘char’ [-Wchar-subscripts] f3[j] = (int)f2[j] + (int)f3[j] + (int)cat; ^ user.cpp:48:47: warning: array subscript has type ‘char’ [-Wchar-subscripts] f3[j] = (int)f2[j] + (int)f3[j] + (int)cat; ^ user.cpp:49:37: warning: array subscript has type ‘char’ [-Wchar-subscripts] cat = char((int)f3[j] / (int)10); ^ user.cpp:50:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] f3[j] %= (int)10; ^ user.cpp:13:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("nunta.in","r",stdin); ^ user.cpp:14:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("nunta.out","w",stdout); ^ user.cpp:16:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n", &x); ^