C# health bar help beginner

Questions & Answers
1

I am just starting with unity and c#. I have some previous code experience (True Basic and HTML). The way I learned these was just by doing examples, writing up the pseudocode and then trying to do it myself. Then I would try and fix the errors. K some things I can’t figure out for the code here that I have made. Don’t laugh. Again I am not brilliant and have just started
using UnityEngine;
using System.Collections;

public class Players_Health : MonoBehaviour{
	public int MaxHealth = 100;
	public int CurrentHealth = 100;
	public float HealthBarLegth;

	// program to be assigned to the player.
	// first time at trying to write a c#.
	
	Void start () {
		HealthBarLength = screen.width / 2;
    }

     Void update () {

		If (CurrentHealth > MaxHealth);
	
		CurrentHealth = MaxHealth;
	}

If (CurrentHealth == 0 || CurrentHealth >> 0)
	{
		Destroy(player)
	}

	Void OnGUI () {
		GUI.Box (10,10,HealthBarLength, 20), CurrentHealth + "/" + MaxHealth);
}
3

void/if shouldn’t be capitalised, but Start/Update should.

Also, line 15 isn’t doing anything. It shouldn’t have a “;” after it, and line 17 should be inside “{” and “}”. Line 20 isn’t contained inside a function.

OnGUI is missing the second “}” among other issues such as “f” following floats.

Here’s a cleaned up version:

using UnityEngine;
using System.Collections;

public class Players_Health : MonoBehaviour {

	[Header("Health Options")]
	public int maxHealth = 100;
	public int currentHealth = 100;

	[Header("GUI Options")]
	public float healthBarWidth;

	void Start()
	{
		healthBarWidth = Screen.width / 2f;
	}

	void Update()
	{
		if (currentHealth > maxHealth)
			currentHealth = maxHealth;

		if (currentHealth == 0 || currentHealth < 0)
		{
			Destroy(gameObject);
		}
	}

	void OnGUI ()
	{
		GUI.Box(new Rect(10f, 10f, healthBarWidth, 20f), currentHealth + "/" + maxHealth);
	}
 }
2

What is the problem? Compile issue, logic issue?

It looks like line 20 should be inside of a function.

Move the bracket on line 18 to line 24

Also line 20 CurrentHealth >> 0. this is a bit shift that does nothing, looks like you need CurrentHealth > 0. Although would you want to destroy the player when their health is greater than 0?