Compilare: user.c: In function ‘main’: user.c:24:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &n); ^ user.c:8:20: warning: ‘tr’ may be used uninitialized in this function [-Wmaybe-uninitialized] while((i<=a[0])||(tr>0)){ ^ user.c:6:12: note: ‘tr’ was declared here int i, tr; ^