使用未赋值的局部变量 c# 错误

如下，当我调试时，它给了我错误： 错误 1 使用未赋值的局部变量 'moneyBet'我不确定以下代码有什么问题。我以前从未得到过这样的东西。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace MyNotSoVeryFirstApplication
{
class Program
{
    static void Main(string[] args)
    {
        bool stillGoing = true;
        int moneyBet;
        int moneyInBank = 0; //change 0 to amount held in actuality
        while (stillGoing == true)
        {
            Console.WriteLine("Money in bank : {0}", moneyInBank);
            Console.WriteLine("----------------------------------------------------");
            Console.Write("Enter amount you would like to bet: ");
            string moneybetString = Console.ReadLine();
            try
            {
                moneyBet = Convert.ToInt32(moneybetString);
            }
            catch (FormatException e)
            {
                Console.WriteLine(e.Message);
            }
            catch (OverflowException e)
            {
                Console.WriteLine(e.Message);
            }
            finally
            {
                if (moneyBet > Int32.MaxValue)
                Console.WriteLine("You are about to bet {0}. Are you sure you want to bet this amount?", moneyBet);
            }
        }
        Console.WriteLine("Press any key to exit.");
        Console.ReadKey(); 
    }
}

}