Compilare: user.c: In function ‘ciur’: user.c:22:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] k_prim[prim[i]][++cnt[prim[i]]] = i; ^ user.c:22:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] user.c:23:5: warning: array subscript has type ‘char’ [-Wchar-subscripts] k_prim[0][++cnt[prim[0]]] = 1; ^ user.c: In function ‘main’: user.c:32:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n", &T); ^ user.c:37:14: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n", &N, &K); ^