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public class Customer
{
    private double accountBalance;
    private string customerName;
    private int pinCode;

    public Customer(double accountBalance, string customerName, int pinCode)
    {
        this.accountBalance = accountBalance;
        this.customerName = customerName;
        this.pinCode = pinCode;
    }

    public double getBalance(int pinCode)
    {
        if (pinCode == this.pinCode)
            return this.accountBalance;
        return 
    }

    public void Deposit(double amount, int pinCode)
    {
        if(pinCode == this.pinCode)
            accountBalance += amount;
    }

    public void Withdraw(double amount, int pinCode)
    {
        if(pinCode == this.pinCode)
            accountBalance -= amount;
    }
}