Compilare: user.c: In function ‘main’: user.c:34:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] A[c]++; ^ user.c:11:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("cuvant.in", "r", stdin); ^ user.c:12:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("cuvant.out", "w", stdout); ^ user.c:25:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%i", &t); ^ user.c:29:14: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s%i", S, &l); ^