Help: a namespace can only contain types and namespace declarations

a namespace can only contain types and namespace declarations I'm having this error with my code, on the line that says "void state_laptop0" I'm learning basic Unity at the moment, so please be gentle in how you explain. From what I've read I think the problem is with my brackets, but I really don't know what to fix. The code is:

using UnityEngine; using UnityEngine.UI; using System.Collections;

public class TextController : MonoBehaviour {

 public Text text;
 private enum States {cell, pills, laptop0, liquid0, freedom};
 private States myState;
 
 // Use this for initialization
 void Start () {
     myState = States.cell;    
 }
 
 // Update is called once per frame
 void Update () {
     print (myState);
     if (myState == States.cell) {
         state_cell();
     } else if (myState == States.pills) {
         state_pills();
     } else if (myState == States.freedom) {
         state_freedom();
     } else if (myState == States.laptop0) {
         state_laptop0();
     }
 }
 
     void state_cell (){
         text.text = "You are in a small room, anchored to the floor with a rope and heavy ball." +
                     " There are 3 items on the floor in front of you." +
                     " A jar of pills, a laptop, and a glass of liquid." +
                     " They are just out of your reach, however." +
                     " But there are are 3 buttons you can reach, parallel with the 3 items.\n\n" +
                     " Press 1 for the pills button, 2 for the laptop button, and 3 for the glass of liquid button." ;
         if (Input.GetKeyDown(KeyCode.Alpha1)) {        
             myState = States.pills;
         
         }
     }
     
     void state_pills () {
         text.text = "The pills slide towards you on a small conveyor belt." +
                     " You put one into your mouth." +
                     " These things taste terrible. Dry, sticky powder. Blegh." +
                     " Wait, why the hell did you consume a random pill from a" +
                     " room in which you are trapped with no recollection" +
                     " of how you got in there?\n\n" +
                     "You pass out. Press space to wake up.";
         if (Input.GetKeyDown(KeyCode.Space)) {
             myState = States.freedom;
         }
     }
     
     void state_freedom () {
         text.text = "You wake up with a fairly fuzzy mind." +
                     " You can make out your surroundings, though." +
                     " You're at home. Was this all a dream?" +
                     " Well, at least you didn't die a horrible, pill induced death, right?\n\n" +
                     "Go back to sleep. You deserve it, winner.";
         }
     }
     
     void state_laptop0() {
         text.text = "The laptop is pushed towards you by a small mechanical arm." +
                     " You press the 'on' button. Can it help you escape?" +
                     " You're greeted with a terrible gif of a laughing man." +
                     " What a joke.\n\n" +
                     "Press R to choose another button.";
         if (Input.GetKeyDown(KeyCode.R))        {myState = States.cell;}
 }