Compilare: user.c: In function ‘read’: user.c:16:6: warning: format ‘%d’ expects argument of type ‘int *’, but argument 3 has type ‘int **’ [-Wformat=] fscanf(fin, "%d\n", &n); ^ user.c:16:12: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d\n", &n); ^ user.c:20:40: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] for(i = 0; i < (int)n; ++i) fscanf(fin, "%d ", &arr[i]); ^