how to make Gameobject parent in code code example

Example 1: unity change parent in script

player.transform.parent = newParent.transform;

Example 2: how to parent something unity

public GameObject GameObjectYouWantToParent;
public GameObject TheNewParent;

Transform GameObjectsTransform = GameObjectYouWantToParent.transform;
GameObjectsTransform.parent = TheNewParent;