using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Please enter a grade between 0 and 100");

start:

byte grade = byte.Parse(Console.ReadLine());

if (grade >=0 && <65)

{

            Console.WriteLine("You failed”");

}

 else if (grade >=65 && grade <=100)

{

Console.WriteLine("You passed");

}

 else if

{

     Console.WriteLine("Please Enter a Valid Number");

    {goto start;}

     }

​

    }

}