How do I get rid of these scripting Errors?

the error says:
Assets/NewBehaviourScript.cs(26,22): warning CS0219: The variable `v’ is assigned but its value is never used

Assets/NewBehaviourScript.cs(26,22): warning CS0219: The variable `h’ is assigned but its value is never used

using UnityEngine;
using System.Collections;

public class NewBehaviourScript : MonoBehaviour {
	public float backspeed = 3f;
	public float movespeed = 10f;
	public float turnspeed = 100f;
	public float fallspeed = 100f;

	void Update () {
		if (Input.GetKey (KeyCode.UpArrow))
			transform.Translate (Vector3.forward * Time.deltaTime * movespeed);
		if (Input.GetKey (KeyCode.DownArrow))
			transform.Translate (-Vector3.forward * Time.deltaTime * movespeed);
		if (Input.GetKey (KeyCode.RightArrow))
			transform.Rotate (Vector3.up * Time.deltaTime * turnspeed);
		if (Input.GetKey (KeyCode.LeftArrow))
			transform.Rotate (Vector3.up * Time.deltaTime * -turnspeed);
		if (Input.GetKeyDown (KeyCode.Space))
			transform.Translate (Vector3.up * Time.deltaTime * fallspeed);
	}
	void start(){
		bool h=Input.GetKey (KeyCode.UpArrow);
		bool v=Input.GetKey (KeyCode.DownArrow);
	}
	void Animating (bool h,bool v)
		{
			// Create a boolean that is true if either of the input axes is non-zero.
		bool walking = h = false;  
		v = false;

			// Tell the animator whether or not the player is walking.
		GetComponent<Animator>().SetBool ("IsWalking", walking);
		}
	}

Those are warnings, not errors. Errors will stop the game from running correctly. Warnings are usually harmless. These two warnings are simply saying that you declared the booleans h and v but you never really used them anywhere.

That said, there are many other actual errors in your code that you didn’t provide in your list of errors/warnings. One is an actual error and the others are more like the theories and logic behind the codes.

Line 29 is an error. You should only assign one variable at a time.

What you typed inside Start() are meaningless if you set the booleans to the Up or Down arrow keys ONLY in that specific instant when Start() runs.

That’s not an error, it’s a warning.

It’s just saying you created a variable and it’s not being used anywhere. Look at the start() function, it’s not actually doing anything.