Compilare: user.c: In function ‘main’: user.c:153:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &n); ^ user.c:155:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &v[i]); ^ user.c: In function ‘interv’: user.c:65:12: warning: ‘np2’ may be used uninitialized in this function [-Wmaybe-uninitialized] while(p2 < dr || p1 > st){ ^