Compilare: user.c: In function ‘main’: user.c:75:10: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("brazi.out", "w", stdout); ^ user.c:78:14: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] for (fscanf(f, "%d", &T); T; T--) { ^ user.c:83:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &N); ^ user.c:85:13: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d %d", &u, &v, &dir); ^