using System;

    public class Account
    {
        private string user_name;
        private string account_no;
        private decimal balance;

        public string User_name
        {
            get { return user_name; }
            set { user_name = value; }
        }
        
        public string Account_no
        {
            get { return account_no; }
            set { account_no = value;}

        }

        public decimal Balance
        {
            get { return balance; }
            set { 
                if (value >= 0) 
                { balance = value; }
            }
        }

        public Account(string n, string a, decimal b)
        {
            User_name  = n;
            Account_no = a;
            Balance = b;
        }

        public void Print()
        {
            Console.WriteLine("acount no.          user name               balance");
            Console.WriteLine("----------------------------------------------------");
            Console.WriteLine(Account_no + "                 " + User_name + "                    " + Balance+"\n");
            
        }

        public decimal Withdraw(decimal amount)
        {
            Balance = Balance - amount;
            Print();
            return Balance;

        }

        public decimal Deposit(decimal amount)
        {
            Balance = Balance + amount;
            Print();
            return Balance;
        }
    }

    public class TestAccount
    {
        static void Main(string[] args)
        {
            Account account1 = new Account("ahmad", "123", 1500);
            Account account2 = new Account("ali", "456", 500);
            
            Console.WriteLine("account1 balance= " + account1.Balance + "\n");
            account1.Withdraw(500);

            account2.Deposit(300);
            Account account3 = new Account("enas", "790", 1150.5m);
            Account account4 = new Account("sahar", "780", -500);

            account4.Print();

        }
    }