HOA6class1

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

namespace HOA6
{
    class Class1
    {
        public static double gen_ad = 0, lower_box = 0, patron = 0, total_bill = 0, final_bill = 0, discount_rate = 0;
    }
}