Recursion in C++

Create a recursive c++ function to fill up an array and make sum of all digit. you have to create different recursive function for fill up and to make sum.

#include<iostream>
using namespace std;

void array_recursive(int array[],int n)
{
     if (n-1>=0)
          {
               cout<<"Enter elements into the array:\n";
               cin>>array[n];
               n--;
               array_recursive(array,n);
           }

}

int sum_array(int array[],int n)
{
            if (n= =0)
                 {
                       return array[0] ;
                  }
            return array[n]+sum_array(array,n-1);
}

int main( )
{
         int n;
         cout<<"Enter the size of an array:\n";
         cin>>n;
         int array[n];
         array_recursive(array,n);
         cout<<"Printing Recursive Data\n";
         for(int i=n; i>0; i--)
             {
                  cout<<array[i]<<"\n";
             }
         cout<<"the sum is: "<<sum_array(array+1,n-1)<<endl;
}