getting child object of an object unity code example

Example 1: unity get child

GameObject Child;
Child = transform.GetChild(0).gameObject;

Example 2: how to reference a child object unity

private void Start()
    {
        parentObject = GameObject.Find("Parent");// The name of the parent object
        childObject = parentObject.transform.GetChild(0).gameObject; // the parent index (starting from 0)
    }