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Bank Account Implementation

Certification: Intermediate Level Accuracy: 50% Submissions: 12 Points: 10

Write a C# program to implement a 'BankAccount' class with deposit, withdraw, and balance features.

Example 1
    
  
  • Input: 
      
      
    • BankAccount account = new BankAccount("12345", 1000);
      • 
      
    • account.Deposit(500);
      • 
      
    • account.Withdraw(200);
      • 
      
    • Console.WriteLine(account.Balance);
      • 
    
    
  
    • 
  
  • Output: 
      
      
    • 1300
      • 
    
    
  
    • 
  
  • Explanation: 
      
      
    • Step 1: Create a new bank account with initial balance 1000.
      • 
      
    • Step 2: Deposit 500, increasing the balance to 1500.
      • 
      
    • Step 3: Withdraw 200, decreasing the balance to 1300.
      • 
      
    • Step 4: Output the final balance of 1300.
      • 
    
    
  
    •
Example 2
    
  
  • Input: 
      
      
    • BankAccount account = new BankAccount("67890");
      • 
      
    • account.Deposit(300);
      • 
      
    • try {
      • 
      
    •     account.Withdraw(500);
      • 
      
    • } catch (InsufficientFundsException ex) {
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    •     Console.WriteLine(ex.Message);
      • 
      
    • }
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    • Console.WriteLine(account.Balance);
      • 
    
    
  
    • 
  
  • Output: 
      
      
    • Insufficient funds: Available: $300, Requested: $500
      • 
      
    • 300
      • 
    
    
  
    • 
  
  • Explanation: 
      
      
    • Step 1: Create a new bank account with default balance 0.
      • 
      
    • Step 2: Deposit 300, making the balance 300.
      • 
      
    • Step 3: Attempt to withdraw 500, which fails since balance is insufficient.
      • 
      
    • Step 4: An exception is thrown and caught, displaying the error message.
      • 
      
    • Step 5: Output the final balance which remains 300.
      • 
    
    
  
    •
Constraints
    
  
  • Account number must be a non-empty string
    • 
  
  • Deposit and withdrawal amounts must be positive values
    • 
  
  • Time Complexity: O(1) for all operations
    • 
  
  • Space Complexity: O(1)
    •
Object-Oriented ProgrammingSnowflakeSwiggy
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Hint
Solution

Solution Hints

    
  
  • Create a custom exception class `InsufficientFundsException` that inherits from `Exception`
    • 
  
  • Use private fields to store the account state and implement public methods to manipulate it
    • 
  
  • Validate all inputs before processing operations
    • 
  
  • Implement proper exception handling for edge cases
    • 
  
  • Consider using decimal type for currency values to avoid floating-point precision issues
    •

Steps to solve by this approach:

 Step 1: Create a custom exception class to handle insufficient funds scenarios.
 Step 2: Define private fields to store account information securely.
 Step 3: Implement a constructor with validation for account number and initial balance.
 Step 4: Create deposit and withdraw methods with appropriate validation.
 Step 5: Implement a read-only Balance property to access the current balance.

Submitted Code :