how to load scene in unity 4 code example

Example 1: unity load scene

using UnityEngine.SceneManagement;

//Put this in whenever you want to load a scene
SceneManager.LoadScene("Scene name");

Example 2: load scene unity

using UnityEngine.SceneManagement


public class LoadScene : MonoBehavior
{
	public string sceneToLoad = "Level2";
    
    public void Start()
    {
    	SceneManager.LoadScene(sceneToLoad);
    }
}