Classes and basic OOP

A class is a blueprint for objects that bundle state (data) and behaviour (methods) together.

Implement a BankAccount class with:

• A constructor that takes an initial balance
• A deposit(amount) method that adds to the balance
• A withdraw(amount) method that subtracts from the balance (do nothing if amount > balance)
• A getBalance() method that returns the current balance

Your program receives a comma-separated sequence of operations:

• start:<n> — create account with balance n
• deposit:<n> — deposit n
• withdraw:<n> — withdraw n
• balance — print the current balance

Input:  start:100,deposit:50,withdraw:30,balance
Output: 120

Constraints

• Withdraw is a no-op if amount exceeds balance (balance doesn't go negative).
• Only print output for balance operations.