Compilare: user.c: In function ‘val’: user.c:12:5: warning: array subscript has type ‘char’ [-Wchar-subscripts] Val[c] = val; ^ user.c: In function ‘main’: user.c:51:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] U[c] = V[c]; ^ user.c:51:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] user.c:90:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] V[c] = U[c]; ^ user.c:90:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] user.c:97:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] sum += V[c] * Val[c]; ^ user.c:97:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] user.c:16:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("spatiu.in", "r", stdin); ^ user.c:17:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("spatiu.out", "w", stdout); ^ user.c:32:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%i", &t); ^ user.c:35:14: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%i%s", &n, S); ^