Question

This simple practical task is the start of a series of exercises in which you will develop a small bank- ing system applying all important OOP concepts. Your first task is to complete the Account class, one of the core classes of the future program. You will need to focus on the use of classes and ob- jects and the ability to capture knowledge and behaviour within objects. The banking system you are developing must have an account, which allows to withdraw and de- posit money. In addition, it must be capable to print its balance and other details to the terminal. There are two auxiliary instance variables to support this functionality and capture the state of an object of the Account class: _balance of decimal data type, _name of String data type. The following methods of the class must be made accessible to a user: Account( String name, decimal balance ) Constructor. Initializes a new instance of the Account class and sets its initial _balance and _name attributes to the respective values given in the input. void Deposit( decimal amount) Adds funds to the account increasing the _balance by the specified amount. void Withdraw( decimal amount) Withdraws funds from the account decreasing the _balance by the specified amount. void Print) Prints the contents of _balance and _name of the account to the terminal. String Name Property. Gets the _name of the account. The following UML diagram should help you to understand the design of the Account class. TestAccount Account . balance: decimal name: String property Name: String (read-only! Accountname: String, balance: decimal) Deposit amount decimal)void Wiedraw amount decimal) void Print k void

Answer 1

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Program:

using System;

//Account class
class Account
{
    //private instance variables
    private decimal _balance;
    private String _name;
    
    //constructor
    public Account(String name, decimal balance)
    {
        _name = name;
        _balance = balance;
    }
    
    //method to deposit amount to the account
    public void Deposit(decimal amount)
    {
        _balance = _balance + amount;
    }
    
    //method to withdraw amount from the account
    public void Withdraw(decimal amount)
    {
        _balance = _balance - amount;
    }
    
    //print the account
    public void Print()
    {
        Console.WriteLine("Name = {0}, Balance = ${1} ", _name, _balance);
    }
    
    //Name property
    public string Name   // property
    {
        get { return _name; }   // get method
    }
}

//TestAccount class
class TestAccount
{
    //Main method
    public static void Main(string[] args)
    {
        //create an account
        Account account = new Account("John", 1000);
        
        //print the account
        account.Print();
        
        //deposit $100 amount
        account.Deposit(100);
        
        //print the account
        account.Print();
        
        //withdraw $200 amount
        account.Withdraw(200);
        
        //print the account
        account.Print();
            
        Console.Write("Press any key to continue . . . ");
        Console.ReadKey(true);
        }
}

Output:

Name = John, Balance = $1000
Name = John, Balance = $1100
Name = John, Balance = $900
Press any key to continue . .