Move all zeroes to end of array

http://www.geeksforgeeks.org/move-zeroes-end-array/

void pushZerosToEnd(int arr[], int n)
{
    int count = 0;  // Count of non-zero elements
 
    // Traverse the array. If element encountered is non-zero, then
    // replace the element at index 'count' with this element
    for (int i = 0; i < n; i++)
        if (arr[i] != 0)
            arr[count++] = arr[i]; // here count is incremented
 
    // Now all non-zero elements have been shifted to front and 'count' is
    // set as index of first 0. Make all elements 0 from count to end.
    while (count < n)
        arr[count++] = 0;
}
 
// Driver program to test above function
int main()
{
    int arr[] = {1, 9, 8, 4, 0, 0, 2, 7, 0, 6, 0, 9};
    int n = sizeof(arr) / sizeof(arr[0]);
    pushZerosToEnd(arr, n);
    cout << "Array after pushing all zeros to end of array :\n";
    for (int i = 0; i < n; i++)
        cout << arr[i] << " ";
    return 0;
}