C# 语法错误，似乎没什么问题

错误：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.IO;

namespace SchoolPasswordLockFolder
{
    public class Program
    {
        public static void Main(string[] args)
        {
           Console.WriteLine("Enter the password: "); // the space character after the semicolon has an error
            public string input = Console.ReadLine();

        }
    }
}

（对于分号后的一个） 及

（最后一个括号） 我已经很长时间没有用C语言编程了，因为我忙于web开发和lua…

改变这个：

Severity    Code    Description Project File    Line
Error   CS1022  Type or namespace definition, or end-of-file expected   SchoolPasswordLockFolder    c:\Users\CENSOREDIDONTWANTSTALKERS\documents\visual studio 2015\Projects\App5\SchoolPasswordLockFolder\SchoolPasswordLockFolder\Program.cs  19

致：

局部变量不获取可访问性修饰符，如

public

更改此项：

Severity    Code    Description Project File    Line
Error   CS1022  Type or namespace definition, or end-of-file expected   SchoolPasswordLockFolder    c:\Users\CENSOREDIDONTWANTSTALKERS\documents\visual studio 2015\Projects\App5\SchoolPasswordLockFolder\SchoolPasswordLockFolder\Program.cs  19

致：

局部变量不获取可访问性修饰符，如

public

public string input = Console.ReadLine();

string input = Console.ReadLine();