Error stage @username

Questions & Answers
1

92549-screen-shot-2017-04-21-at-25620-pm.png
The Error is above this sentence

using System.Collections;    
using System.Collections.Generic;
using UnityEngine;

// add rigidbody 2d and circle collider 2d and change radis to 0.07

public class Player : MonoBehaviour
{
	public int power = 500;
	public int jumpHeight = 1000;
	public bool isFalling = false;
	// Use this for initialization
	void Start (){
		
	}
	
	// Update is called once per frame
	void Update () 
	{
		GetComponent().AddForce (Vector2.right * power);
	}
};
2

I understand you want to AddForce to a RigidBody2D component, so you can use this :

GetComponent<RigidBody2D>().AddForce (Vector2.right * power);

Now, this is fairly unsafe, to make sure you do have a RigidBody2D component on the same game object, you can use the RequireComponent attribute before the class declaration.

[RequireComponent (typeof (RigidBody2D))]
public class Player : MonoBehaviour

Also, consider storing the component reference. GetComponent has a cost, and it’s better not to use it every frame.

RigidBody2D rb2d;
void Awake ()
{
    rb2d = GetComponent<RigidBody2D>();
}
void Update ()
{
    rb2d.AddForce (Vector2.right * power);
}