#include<iostream.h>#include<iomanip.h>#include<math.h>void main(){float i,n,s,ma,k,a[20];cout<<"n=";cin>>n;
ma=0;for(i=0;i<n;i++){cout<<"a["<<i<<"]=";cin>>a[i];s+=a[i];}
ma=s/n;for(i=n;i>0;i--){a[i]=a[i-1];a[0]=ma;}cout<<"vectorul este:"<<endl;for(i=0;i<=n;i++)cout<<a[i]<<" ";cout<<endl;
}