**Step 1: Introduction to the Concept** The given task is to create a **Bank Management System** as a semester project using file processing and structures in programming (commonly C or C++). The system should allow users to perform banking operations through a menu-driven interface and store account details using file handling. The menu options are managed via a switch-case structure. It ensures unique account numbers and updates records when transactions occur. --- **Step 2: Explanation of Each Requirement** **a) Menu and Switch Structure** The program should display a menu with several banking options (e.g., create account, deposit, withdraw, check balance, exit). The selection is handled using a `switch` statement, which calls the appropriate function based on user input. **b) Unique Account Number Handling** When creating a new account, the program checks if the account number already exists in the `accounts.dat` file. If it does, the user is prompted to enter a different, unique account number. **c) Updating Account Details on Transactions** Whenever a deposit or withdrawal is made, the program updates the relevant account's details (like balance) in the `accounts.dat` file, ensuring that all changes are saved. **d) Submission Requirements** Once the code is complete, you need to create a `.rar` archive containing your code and the `accounts.dat` file. The archive should be named as specified (with your student name, number, and course code) and emailed to the instructor. --- **Step 3: Final Answer (Summary in a Few Sentences)** This project involves creating a menu-driven bank management system using structures and file handling, ensuring unique account numbers and real-time updating of account records. The completed code and data file should be archived and submitted as per the given naming convention. --- **Step 4: What We Did in Each Step** - **Step 1:** Introduced the overall concept and requirements of the Bank Management System project. - **Step 2:** Broke down and clearly explained each part of the task, covering the menu, uniqueness check, file updating, and submission. - **Step 3:** Gave a concise summary of the solution. - **Step 4:** Clarified the process followed to ensure each aspect of the question was addressed completely and clearly.