Compilare: user.c: In function ‘main’: user.c:57:12: warning: operation on ‘i’ may be undefined [-Wsequence-point] v[i++]=2*(i-1)+1; ^ user.c:34:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("aranjare2.in","r",stdin); ^ user.c:35:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("aranjare2.out","w",stdout); ^ user.c:36:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^