using System;

public class Program

{

    public static void Main()

    {

        string name;

        double  banana,potato,classes,total;

        potato = 0;

        Console.WriteLine("Welcome!");

        Console.WriteLine("What's your name?");

        Console.WriteLine();

        name = Console.ReadLine();

         Console.WriteLine();

         Console.WriteLine("Nice to meet you" + " " + name +  "!");

         Console.WriteLine();

        Console.WriteLine("How many classes are you taking?");

        classes = double.Parse(Console.ReadLine());

        Console.WriteLine("Write the first class");

        banana = int.Parse(Console.ReadLine());

            potato +=banana;

        if (  banana  <= 70)

                {

            Console.WriteLine(" You failed :( ");

        }

        if (banana >= 70 && banana < 100)

        {

        Console.WriteLine("Yay! you passed :)");

        }   

        for( int  n= 2; n <= classes -1  ;  n ++ )

    Console.WriteLine("Write the next class");

        banana = int.Parse(Console.ReadLine());

            potato +=banana;

        if (  banana  <= 70)

                {

            Console.WriteLine(" You failed :( ");

        }

        if (banana >= 70 && banana < 100)

        {

        Console.WriteLine("Yay! you passed :)");

        }   

​

        for( banana !=  1)

    Console.WriteLine("Write the last  class");

        banana = int.Parse(Console.ReadLine());

            potato +=banana;

        if (  banana  <= 70)

                {

            Console.WriteLine(" You failed :( ");

        }

        if (banana >= 70 && banana < 100)

        {

        Console.WriteLine("Yay! you passed :)");

        }

    }}

    total = potato / banana;

    Console.WriteLine("Your average is" + " " + total);