Compilare: user.c: In function ‘main’: user.c:19:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d %d\n", &R, &P); ^ user.c:21:10: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%lf\n", &v[i]); ^ user.c:53:12: warning: ‘k’ may be used uninitialized in this function [-Wmaybe-uninitialized] while (v[j] > second_max && p < P) { ^ user.c:53:12: warning: ‘j’ may be used uninitialized in this function [-Wmaybe-uninitialized]