how to set the camera follow the character?

Questions & Answers
1

hi, i have some problem on my main camera.
In my game,my character is created after login using instantiate, so the target have to been set inside the script.
when i press i j k l, my character will move which have been done in the other script.
and the script for the main camera is as below.
while only the key u and o work as expected,
and the i j k l give my unexpected effect,
it seem not set behind my character.

void Update () {
		if(!targetset){
			GameObject[] players=GameObject.FindGameObjectsWithTag("player");
			//Debug.Log(players[0].name);
			foreach(GameObject temp in players){
				if(MemberGlobal.Nickname==temp.name){
					player=temp;
				}
			}
		}
	
		if(Input.GetKey("i")||Input.GetKey("j")||Input.GetKey("k")||Input.GetKey("l")){
			mainCamera.transform.position=new Vector3(xoffset,yoffset,zoffset)+player.transform.position;;
		}
		if(Input.GetKey("u")){
			transform.RotateAround(player.transform.position,Vector3.up,-2f);
		}
		if(Input.GetKey("o")){
			transform.RotateAround(player.transform.position,Vector3.up,2f);
		}
		
	}
2

Add the camera as a child object of the player and you won’t need any scripting.