how to get tagged objects in unity c 23

1// Find the name of the closest enemyusing UnityEngine;
2using System.Collections;public class ExampleClass : MonoBehaviour
3{
4    public GameObject FindClosestEnemy()
5    {
6        GameObject[] gos;
7        gos = GameObject.FindGameObjectsWithTag("Enemy");
8        GameObject closest = null;
9        float distance = Mathf.Infinity;
10        Vector3 position = transform.position;
11        foreach (GameObject go in gos)
12        {
13            Vector3 diff = go.transform.position - position;
14            float curDistance = diff.sqrMagnitude;
15            if (curDistance < distance)
16            {
17                closest = go;
18                distance = curDistance;
19            }
20        }
21        return closest;
22    }
23}
24

1using UnityEngine;// Search for game objects with a tag that is not usedpublic class Example : MonoBehaviour
2{
3    void Start()
4    {
5        GameObject[] gameObjects;
6        gameObjects = GameObject.FindGameObjectsWithTag("Enemy");        if (gameObjects.Length == 0)
7        {
8            Debug.Log("No game objects are tagged with 'Enemy'");
9        }
10    }
11}
12

1using UnityEngine;public class Example : MonoBehaviour
2{
3    void Start()
4    {
5        //Set the tag of this GameObject to Player
6        gameObject.tag = "Player";
7    }    private void OnTriggerEnter(Collider other)
8    {
9        //Check to see if the tag on the collider is equal to Enemy
10        if (other.tag == "Enemy")
11        {
12            Debug.Log("Triggered by Enemy");
13        }
14    }
15}
16

1// Instantiates respawnPrefab at the location
2// of all game objects tagged "Respawn".using UnityEngine;
3using System.Collections;public class ExampleClass : MonoBehaviour
4{
5    public GameObject respawnPrefab;
6    public GameObject[] respawns;
7    void Start()
8    {
9        if (respawns == null)
10            respawns = GameObject.FindGameObjectsWithTag("Respawn");        foreach (GameObject respawn in respawns)
11        {
12            Instantiate(respawnPrefab, respawn.transform.position, respawn.transform.rotation);
13        }
14    }
15}
16