Can't figure out a problem

[Kuba_Stencel]

using System.Diagnostics;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Debug = UnityEngine.Debug;
public class NumberWizard : MonoBehaviour
{

    int max;

        int min;

        int guess;
    
    // Start is called before the first frame update
    void Start()
    {
        StartGame();
    }
    void StartGame()
    {
        int max = 1000;

        int min = 1;

        int guess = 500;

        Debug.Log("Hi welcome to number wizard");
        Debug.Log("Are u ready for the game");
        Debug.Log("Let's GO!!!");
        Debug.Log("Pick a number and keep it as secret I'm going to guess what it is!");
        Debug.Log("The highest number you can pick is: " + max);
        Debug.Log("The lowest number you can pick is: " + min);
        Debug.Log("Ok now Please tell me if your number is higher or lower than  " + guess);
        Debug.Log("Push Up = Higher, Push Down = Lower, Push Enter = Correct");
        max = max + 1;
    }

    // Update is called once per frame
    void Update()
    {
        
        //Detect when the down arrow key is pressed down
        if (Input.GetKeyDown(KeyCode.UpArrow))
        {            
            min = guess;
            void NextGuess();            
        }
        else if (Input.GetKeyDown(KeyCode.DownArrow))
        {
            max = guess;
            void NextGuess();            
        }
        else if (Input.GetKeyDown(KeyCode.Return))
        {
            Debug.Log("Well i figured it out");
            void StartGame();
        }        
   
    }
    void NextGuess()
    {
            guess = (min+max) / 2;
            Debug.Log("Is it lower or higher then: "+ guess);
    }  
    
}

Getting Error: Assets/NumberWizard.cs(47,18): error CS8112: ‘NextGuess()’ is a local function and must therefore always have a body.

[David_Lamonaca]

When calling on the method “NextGuess” and even your “StartGame” don’t put void first. just write it as

NextGuess(); and StartGame();

[David_Lamonaca]

void Update()
{
    
    //Detect when the down arrow key is pressed down
    if (Input.GetKeyDown(KeyCode.UpArrow))
    {            
        min = guess;
        NextGuess();            
    }
    else if (Input.GetKeyDown(KeyCode.DownArrow))
    {
        max = guess;
        NextGuess();            
    }
    else if (Input.GetKeyDown(KeyCode.Return))
    {
        Debug.Log("Well i figured it out");
         StartGame();
    }        

}

[Kuba_Stencel]

Oh yeah u are right i miss that