Compilare: user.c: In function ‘main’: user.c:66:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d%d", &aux, &aux, &k); ^ user.c:68:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d%d%d%d", &sus[2 * i], &x[2 * i], &jos[2 * i], &x[2 * i + 1], &val[2 * i]); ^ user.c:88:9: warning: ‘last’ may be used uninitialized in this function [-Wmaybe-uninitialized] update(&max, &nrmax, x[point[2 * k - 1]] - last); ^