Beginner - Array of floats

Unity Engine
1

Can someone please show me how I can get an array of floats working in Unity, here’s what I got so far, error in Unity is :

“NullReferenceException: Object reference not set to an instance of an object
test.Start () (at Assets/Script/test.cs:40)”

using UnityEngine;
using System.Collections;

class zzBallClass
{
public float[] x = new float[9];
}


public class test : MonoBehaviour {
	
	zzBallClass sBall;
	
	
	// Use this for initialization
	void Start () 
	{
	sBall.x[0] = 1.1f;
	}
	
	
	void Update () 
	{
	sBall.x[0]++;
	}


	void OnGUI()
	{
	string sText;
	sText = "Ball.x[0] = " + Ball.x[0].ToString();
	GUI.Box(new Rect(300,20,130,20), sText);
	}
	
}
2

You forget to initialize sBall valiable with new keyword.

...
public class test : MonoBehaviour {
    zzBallClass sBall = new zzBallClass();
...
3

Thanks…