Compilare: main.c: In function 'main': main.c:17:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%lld%lld%lld", &n, &v[0], &v[1], &v[2] ); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:23:7: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%lld", &v[i] ); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~