Compilare: user.c: In function ‘main’: user.c:62:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d", &n, &k); ^ user.c:64:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d%d%d", &sus[2 * i], &x[2 * i], &jos[2 * i], &x[2 * i + 1]); ^ user.c:84:9: warning: ‘last’ may be used uninitialized in this function [-Wmaybe-uninitialized] update(&nrmax, x[point[2 * n - 1]] - last, k); ^