Compilare: user.c: In function ‘main’: user.c:4:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("secvente2.in","r",stdin),freopen("secvente2.out","w",stdout),scanf("%d",&n); ^ user.c:4:46: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("secvente2.in","r",stdin),freopen("secvente2.out","w",stdout),scanf("%d",&n); ^ user.c:4:80: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] freopen("secvente2.in","r",stdin),freopen("secvente2.out","w",stdout),scanf("%d",&n); ^ user.c:6:14: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&v[i]),b=e=v[i]; ^