HELP: "a namespace cannot directly contain members such as fields or methods"

Hey,
On line 45, column 9, there is an error that I do not know how to fix. Can anyone help me? Thanks in advance. It is the line that says "return Physics.raycast"

Code (CSharp):

1.  
2. using System.Collections;
3. using System.Collections.Generic;
4. using UnityEngine;
5.  
6. public class CharacterMovement : MonoBehaviour
7. {
8.     public float speed = 5;
9.     public float jumpPower = 4;
10.     Rigidbody rb;
11.     CapsuleCollider col;
12.  
13.     // Use this for intialization
14.     void Start()
15.     {
16.         Cursor.lockState = CursorLockMode.Locked;
17.         rb = GetComponent<Rigidbody>();
18.         col = GetComponent<CapsuleCollider>();
19.     }
20.  
21.     // Update is called once per frame
22.     void Update()
23.     {
24.         //Get the input value from the controllers
25.         float Horizontal = Input.GetAxis("Horizontal") * speed;
26.         float Vertical = Input.GetAxis("Vertical") * speed;
27.         Horizontal *= Time.deltaTime;
28.         Vertical *= Time.deltaTime;
29.         //Translate our character via our inputs.
30.         transform.Translate(Horizontal, 0, Vertical);
31.  
32.         if (isGrounded() && Input.GetButtonDown("Jump"))
33.         {
34.             //Add upward force to the rigid body when we press jump.
35.             rb.AddForce(Vector3.up * jumpPower, ForceMode.Impulse);
36.         }
37.  
38.         if (Input.GetKeyDown("escape"))
39.             Cursor.lockState = CursorLockMode.None;
40.         {
41.  
42.          private bool isGrounded();
43.         }
44.         //Test that we are grounded by drawing an invisible line (raycast)
45.         //If this hits a solid object e.g. floor then we are grounded.
46.         return Physics.Raycast(transform.position, Vector3.down, col.bounds.extents.y + 0.1f);
47.     }
48. }

 

you hae written the method called 'isGrounded' inside the body of the Update method
Check your bracketing, and your line ends ( ; )