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

namespace State_VendingMachineExample
{
    // State 인터페이스
    internal abstract class VMState
    {
        protected VendingMachine vendingMachine;
        public abstract void AddMoney(decimal money);
        public abstract void SelectItem(int itemId);
        public abstract void ReturnChange(decimal money);
    }
}