Write a program in C++ to print an Array using Recursion

Static variables have the property of preserving their value even after they are out of their scope! Hence, static variables preserve their previous value in their previous scope and are not initialized again in the new scope.
Syntax:
static data_type var_name = var_value;
C++
#include <bits/stdc++.h>
using namespace std;
void print_array( int arr[], int size)
{
static int i;
if (i == size) {
i = 0;
cout << endl;
return ;
}
cout << arr[i] << " " ;
i++;
print_array(arr, size);
}
int main()
{
int arr[] = { 3, 5, 6, 8, 1 };
int n = sizeof (arr) / sizeof (arr[0]);
print_array(arr, n);
return 0;
}
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2. Without using Static Variable
C++
#include <bits/stdc++.h>
using namespace std;
void print_array( int arr[], int size, int i)
{
if (i == size) {
cout << endl;
return ;
}
cout << arr[i] << " " ;
i++;
print_array(arr, size, i);
}
int main()
{
int arr[] = { 3, 5, 6, 8, 1 };
int n = sizeof (arr) / sizeof (arr[0]);
print_array(arr, n, 0);
return 0;
}
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Time Complexity: O(n)
Auxiliary Space: O(1), If we consider recursive call stack then it would be O(n)