Eroare de compilare: user.c: In function ‘main’: user.c:8:3: error: request for member ‘close’ in something not a structure or union f.close(); ^ user.c:6:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &a); ^ user.c:7:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &b); ^