（1）浮點型（float）保留小數(shù)
float y=8.2222f;
string s = Nun.ToString("F1");//F1代表保留著一位小數(shù)，F(xiàn)2 F3一次往后推
y = float.Parse(s)*; //y現(xiàn)在是8.2
（2）在Inspector面板顯示的變量凑耻，可以使用它來幫你給變量加個描述
using UnityEngine;
using System.Collections;
public class Test : MonoBehaviour
{
[Tooltip("提示生命值范圍0-100")]
public int health = 0;
}
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