Left Turn and Right Turn

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

public class Player : MonoBehaviour
{

    public bool front = true;

    public bool back = false;

    // Start is called before the first frame update
    void Start()
    {
        front = false;

        back = true;

        transform.Rotate (0,0,0);



    }

    // Update is called once per frame
    void Update()
    {
        if (Input.GetKeyDown(KeyCode.D)) {



             if (front == true)
             {
                 transform.Rotate (0,180,0);
                 front = false;
                 back = true;
             }



    }

     if (Input.GetKeyDown(KeyCode.A) )
        {



          if (back == true)
             {
                 transform.Rotate (0,-180,0);
                 back = false;
                 front = true;
             }

         }

    }





}