void Update () {

transform.position = new Vector2 (Mathf.Clamp(transform.position.x, -6.6f, 6.6f), Mathf.Clamp(transform.position.y, -4.9f, 4.9f));

  if (Input.GetKey ("up"))
   transform.Translate (Vector2.up * Time.deltaTime);
  if (Input.GetKey ("down"))
   transform.Translate(Vector2.down * Time.deltaTime);
  if (Input.GetKey ("right"))
   transform.Translate(Vector2.right * Time.deltaTime);
  if (Input.GetKey ("left"))
   transform.Translate(Vector2.left * Time.deltaTime);  
    }
}

float yMove = Input.GetAxis("Vertical") * Time.deltaTime;
     transform.Translate(0f, yMove, 0f);
      Vector3 clampedPosition = transform.position;
      clampedPosition.y = Mathf.Clamp(transform.position.y, -4.1f, 4.1f);
      transform.position = clampedPosition;

rocketInstance = Instantiate(rocketPrefab, barrelEnd.position, barrelEnd.rotation) as Rigidbody

enemy.transform.SetParent(child)

enemy.transform.parent = child

foreach (Transform child in transform) {
  GameObject enemy = Instantiate (enemyPrefab, child.transform.position , Quaternion.identity) as GameObject;
  enemy.transform.parent = child;
}

foreach (int fVar in myArr)
Console.WriteLine("{0} Squared is equal to {1}",fVar,fVar*fVar);