Unity script API - time class

Time class ：

1、 from Unity Interface for obtaining time information

2、 Common properties ：

     time： The time taken from the beginning of the game to the present

     timeScale： Time scaling

     deltaTime： In seconds , Represents the elapsed time of each frame

     unscaledDeltaTime： Elapsed time per frame unaffected by scaling

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

/// <summary>
/// 
/// </summary>
public class TimeDemo : MonoBehaviour
{
    public int speed = 100;
    public float a,b,c;
    public int count;
    public float du;
    public int timeVsCount;
    public int duVsCount;

    // When rendering a scene , Not subject to TimeScale influence 
    public void Update()
    {
        a = Time.time;// Game run time affected by scaling 
        b = Time.unscaledTime;// Game run time unaffected by scaling 
        c = Time.realtimeSinceStartup;// Actual game run time 

        // Every rendered frame   perform 1 Time   rotate 1 degree 
        //1 second   rotate ？ degree   1 Number of frames rotated in seconds   In the same case 
        // Multiple frames  1 Second rotation speed is fast   hope 1 Frame rotation is small 
        //   Less             slow               Big 
        this.transform.Rotate(0, speed * Time.deltaTime,0);


        // Game pause , Individual objects are not affected  Time.unscaledDeltaTime： Every frame interval unaffected by scaling 
        this.transform.Rotate(0, speed * Time.unscaledDeltaTime, 0);

        // rotate / Movement speed  *  Time consumed per frame , Rotation can be guaranteed / The moving speed is not affected by the machine performance , And rendering effects 
        count++;
        du += speed * Time.deltaTime;
        if (a >= 1 && timeVsCount < 1) 
        {
            //speed:100 1 Second rendering 76 Time 
            //speed:200 1 Second rendering 66 Time 
            Debug.Log(" The game frame is rendered "+count+" Time ");
            Debug.Log(" The game object rotates " + du + " degree ");
            Debug.Log(Time.deltaTime);
            timeVsCount++;
        }

        if (du >= 360 && duVsCount < 1)
        {
            Debug.Log(" The game object rotates for one circle , The total amount of rendering is " + count + " Time ");
            Debug.Log(" The game object rotates " + du + " degree ");
            Debug.Log(Time.deltaTime);
            duVsCount++;
        }
    }

    // Fix  0.02  second   Do it once   It has nothing to do with rendering , suffer TimeScale influence 
    public void FixedUpdate()
    {
        this.transform.Rotate(0,speed,0);
    }

    // Game pause 
    private void OnGUI()
    {
        if (GUILayout.Button(" Pause the game ")) 
        {
            Time.timeScale = 0;
        }
        if (GUILayout.Button(" Keep playing "))
        {
            Time.timeScale = 1;
        }
    }

}