OOP — Encapsulation private field #36 — C# Programming

Problem

Private balance with public Deposit method.

Hints

private field + public method

Your practice code

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Solution

using System;

class Program
{
    static void Main()
    {
        var w = new Wallet();
        w.Deposit(50);
        Console.WriteLine(w.GetBalance());

class Wallet {
    private decimal _balance;
    public void Deposit(decimal amt) => _balance += amt;
    public decimal GetBalance() => _balance;
}
    }
}

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Explanation

Encapsulation hides fields; expose controlled methods.