Display non-zero elements

#include <iostream>
using namespace std;

// Print the non-zero elements of an array.
int main()
{
    // Create a list of numbers.
    int numbers[]{ 1, 0, 3, 4, 0, 6, 7, 8, 9};

    // Check each number.
    for (int n : numbers)
    {
        // If the number is not zero,
        if (n != 0)
        {
            // Display the number.
            cout << n << ' ';
        }
    }
    // Put the cursor on the next line.
    cout << endl;

    // End the program.
    return 0;
}