Identifier Expected Error

Questions & Answers
1

Error at (41, 21): Identifier Expected
What does this error mean and how can I fix it in this context?

public class PlayerMovement : MonoBehaviour
{
public Rigidbody2D rb; //Rigidbody
public float facing; //The direction the player is facing (-1/1,left/right)

// Start is called before the first frame update
void Awake()
{
    rb = GetComponent<Rigidbody2D>();
    facing = 1;
}

// Update is called once per frame
void Update()
{
    if (Input.GetKey(KeyCode.A))
    {
        facing = -1;
        Walk(facing);
    }
    else if (Input.GetKey(KeyCode.D))
    {
        facing = 1;
        Walk(facing);
    }
}
void Walk(facing) <-ERROR ON THIS LINE
{
    rb.velocity = new Vector2(20*facing, rb.velocity.y)
} //This make it so if the player presses the run button at a standstill, they'll run in the last direction they walked

}

2

when you declare a member (e.g. method), you need to give a parameter type and its name.
you declared Walk method with ‘facing’.
what is facing? Compiler doesn’t know. It is not type + name, so it throws an error.
Inside a method you can write: Walk(facing); , because this is invoking method not declaring, so you pass argument to the function, and it works. But when you declare you need to have type + name.

Hope, that explanation helps. Also consider joining discord for learning Unity: ArtOfMakingGames