Unexpected symbol error

Questions & Answers
1

Assets/weponSway.cs(9,18): error CS1519: Unexpected symbol `Quaternion’ in class, struct, or interface member declaration This is the error i get

 using UnityEngine;
 using System.Collections;
 
 public class weponSway : MonoBehaviour {
 
     float mouseX;
     float mouseY
 
     Quaternion rotationSpeed;
 
     public float speed;
 
 
     viod Start () {
 
     }
 
 
     void Update () {
 
         mouseX = Input.GetAxis ("Mouse X");
         mouseY = Input.GetAxis ("Mouse Y");
 
         rotationSpeed = Quaternion.Euler (-mouseY, mouseX, 0);
 
         transformation.localRotation = Quaternion.Slerp (transform.localRotation, rotationSpeed, speed * Time.deltaTime);
 
     }
 }
2

Add a semi-colon to the end of 7