unity call when quit code example

Example 1: application.stop unity

using UnityEngine;
using System.Collections;// Quits the player when the user hits escapepublic class ExampleClass : MonoBehaviour
{
    void Update()
    {
        if (Input.GetKey("escape"))
        {
            Application.Quit();
        }
    }
}

Example 2: shut game unity

public void QuitGame()
{
	Application.Quit();
}