cs0103: Unity don't understand GetAxis [closed]

Question

I'm using Brackeys guide how to make a first person movement in unity, but unity leaves the error message "The name 'GetAxis'does not exist in the current context"

public float mouseSenitivity = 100f;

public Transform playerBody;
    
// Start is called before the first frame update
void Start()
{
    
}

// Update is called once per frame
void Update()
{
    float mouseX = GetAxis("Mouse X") * mouseSenitivity * Time.deltaTime;
    float mouseY = GetAxis("Mouse Y") * mouseSenitivity * Time.deltaTime;

    playerBody.Rotate(Vector3.up * mouseX);

Answer 1

You need to use Input.GetAxis:

float mouseX = Input.GetAxis("Mouse X") * mouseSenitivity * Time.deltaTime;
float mouseY = Input.GetAxis("Mouse Y") * mouseSenitivity * Time.deltaTime;