double totalmoney = 0;

while (true)

{ Console.WriteLine("         OSU Snacks menu");
    Console.WriteLine("Enter 1 for soda,          price = $1");
    Console.WriteLine("Enter 2 for cookies,       price = $2");
    Console.WriteLine("Enter 3 for chips,         price = $1.5");


    string i = Console.ReadLine();
    int userinput = Convert.ToInt32(i);

    if (userinput == 1)
    {
        Console.WriteLine("You choose soda. How many do you want?");
        string amount = Console.ReadLine();
        int amounts = Convert.ToInt32(amount);
        double unitprice = 1;
        Console.WriteLine("Press y if that is all for today:");
        string bagel = Console.ReadLine();
        if (bagel == "y")
        {
            totalmoney = amounts * unitprice ;
            break;
        }
       
    }
    else if (userinput == 2)
    {
        Console.WriteLine("You choose cookies. How many do you want?");
        string amount = Console.ReadLine();
        int amounts = Convert.ToInt32(amount);
        double unitprice = 2;


        Console.WriteLine("Press y if that is all for today:");
        string bagel = Console.ReadLine();
        if (bagel == "y")
        {
            totalmoney = amounts * unitprice;
            break;
        }
     
    }
    else if (userinput == 3)
    {
        Console.WriteLine("You choose chips. How many do you want?");
        string amount = Console.ReadLine();
        double amounts = Convert.ToDouble(amount);
        double unitprice = 1.5;


        Console.WriteLine("Press y if that is all for today:");
        string bagel = Console.ReadLine();
        if (bagel == "y")
        {
            totalmoney = amounts * unitprice;
            break;
        }
  
    }
    else
    {
        Console.WriteLine("Sorry. We don't have it.");
        
    }
    
}

Console.WriteLine("Total money to pay: $" + totalmoney);
Console.WriteLine("press any button to exit");
Console.ReadLine();