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You want to create a class BankAccount where the Balance can be read publicly but only changed inside the class. Which is the best way to declare Balance?

hard🚀 Application Q15 of Q15

C Sharp (C#) - Properties and Encapsulation

You want to create a class BankAccount where the Balance can be read publicly but only changed inside the class. Which is the best way to declare Balance?

Apublic decimal Balance; // public field

Bprivate decimal balance; public decimal Balance { get; private set; }

Cpublic decimal Balance { private get; set; }

Dprivate decimal Balance; public decimal balance { get; set; }

Step-by-Step Solution

Solution:

Step 1: Understand access needs
Balance should be readable publicly but only settable privately inside the class.
Step 2: Choose property with private set
Using public decimal Balance { get; private set; } allows public reading but restricts setting to inside the class.
Final Answer:
private decimal balance; public decimal Balance { get; private set; } -> Option B
Quick Check:
Public get + private set = controlled access [OK]

Quick Trick: Use property with private set for controlled write access. [OK]

Common Mistakes:

MISTAKES

Using public field exposes data to unwanted changes.
Setting private get hides data from outside.
Confusing field and property naming conventions.

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