App Screenshot

This C# program is a simple banking application that follows the Interpreter Pattern. Let’s break down the key components and their functionalities:

  1. Interpreter Pattern is a behavioral design pattern that defines a grammar for a language and provides an interpreter to interpret sentences in that language.

  2. Expression.cs - Defines the Expression interface, which declares the Interpret method. This method will be implemented by concrete expression classes to perform operations on a bank account.

  3. CheckBalanceExpression.cs - Implements the Expression interface. It interprets and displays the account balance on the console.

  4. Context.cs - Represents the context in which an interpretation operation is performed. It holds an instance of the Account class.

  5. DepositExpression.cs - Implements the Expression interface. It interprets and performs a deposit operation on the provided account, updating the balance.

  6. WithdrawExpression.cs - Implements the Expression interface. It interprets and performs a withdrawal operation on the provided account, considering the balance and displaying appropriate messages.

  7. Account.cs (Models) - Represents a bank account with a balance.

  8. Program.cs - The main entry point for the banking application. It creates an account, a context for that account, and provides a simple console-based user interface to interact with the banking operations.

Key User Interactions:

  1. Check Balance (Option 1): Displays the account balance.
  2. Withdraw (Option 2): Allows the user to input an amount and withdraw funds if sufficient balance is available.
  3. Deposit (Option 3): Allows the user to input an amount and deposit funds.
  4. Exit (Option 4): Terminates the program.

How to Run:

  1. The program starts by creating an account and a context.
  2. It enters a loop where the user can choose options (1-4) to perform different banking operations.
  3. Depending on the option chosen, the program interacts with the corresponding expression classes to interpret and execute the requested operation on the account.

Example Flow:

  1. User chooses option 1: Check Balance.
  2. The CheckBalanceExpression is instantiated, and its Interpret method is called to display the account balance.