Compilare: user.c: In function ‘main’: user.c:17:5: warning: format ‘%s’ expects argument of type ‘char *’, but argument 4 has type ‘char (*)[10001]’ [-Wformat=] scanf("%d%d%s",&n, &k, &s); ^ user.c:15:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen(in, "r", stdin); ^ user.c:16:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen(out, "w", stdout); ^ user.c:17:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%s",&n, &k, &s); ^