using System;

public class Program

{

    public static void Main()

    {       

        Console.WriteLine("Made by Obed Iñaki Uresti Almanza");

        Subjects:

        Console.WriteLine("The price per subject is $50 each, up to $350 per semester;");

        Console.WriteLine("How many subjects are you signing up for: ");

        int Subs = Convert.ToInt32(Console.ReadLine());

        int Total;

        if (Subs <=0)

        {

        Console.WriteLine("Please usea a correct number");

        goto Subjects; 

        }

        else if (Subs >= 1 & Subs < 7)

        {

        Total = Subs * 50;

        Console.WriteLine("Total to be paid in this semester is ${0}", Total);

        goto Subjects;

        }

        else if (Subs >=7)

        {

            Total = 350;

            Console.WriteLine("Total to be paid in this semester is ${0}", Total);

            goto Subjects;

        }

​

    }

}