Compilare: user.c: In function ‘main’: user.c:41:16: warning: variable ‘l2’ set but not used [-Wunused-but-set-variable] int i, l1, l2, Best_asc[MAXN], Best_desc[MAXN], max_length; ^ user.c:43:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fdin, "%d", &n); ^ user.c:45:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fdin, "%lf", &v[i]); ^