TestStopCoutine

using UnityEngine;
using System.Collections;

public class TestCoroutine : MonoBehaviour {
    public void Start() 
    {
        StartCoroutine("Co1");
        StartCoroutine("Kill");
    }

    public IEnumerator Kill()
    {
        yield return new WaitForSeconds(2);
        StopCoroutine("Co1");
    }

    public IEnumerator Co1()
    {
        Debug.Log("start co 1");
        yield return StartCoroutine("Co2");
        Debug.Log("end co 1");
    }

    public IEnumerator Co2() 
    {
        Debug.Log("start co 2");
        yield return StartCoroutine("Co3");
        Debug.Log("end co 2");
    }

    public IEnumerator Co3()
    {
        Debug.Log("start co 3");
        for(int i=0; i<5; i++) {
            yield return new WaitForSeconds(1);
            Debug.Log(i+1);
        }
        Debug.Log("end co 3");
    }

}