copy_n() Function in C++ STL

// C++ code to demonstrate the
// working of copy_n() function
// Used with array
#include <algorithm>
#include <iostream>
using namespace std;
int main()
{
    // Initializing the array
    int ar[6] = { 8, 2, 1, 7, 3, 9 };
    // Declaring second array
    int ar1[6];
    // Using copy_n() to copy contents
    copy_n(ar, 6, ar1);
    // Displaying the new array
    cout << "The new array after copying is : ";
    for (int i = 0; i < 6; i++) {
        cout << ar1[i] << " ";
    }
    return 0;
}

// C++ code to demonstrate the
// working of copy_n() function
// Used with vector
#include <algorithm>
#include <iostream>
#include <vector>
using namespace std;
int main()
{
    // initializing the source vector
    vector<int> v1 = { 8, 2, 1, 7, 3, 9 };
    // declaring destination vectors
    vector<int> v2(6);
    // using copy_n() to copy first 3 elements
    copy_n(v1.begin(), 3, v2.begin());
    // printing new vector
    cout << "The new vector after copying is : ";
    for (int i = 0; i < v2.size(); i++) {
        cout << v2[i] << " ";
    }
    return 0;
}