using System;
class Math
{
private int num1;
private int num2;
public void Add()
Console.WriteLine(num1+num2);
}
public int Num1 //ENCAPSULATION
set//set property//get accessor (for write only)
num1=value;
Console.WriteLine(num1);
public int Num2
num2=value;
Console.WriteLine(num2);
public class Program
public static void Main()
Math group1 = new Math();
group1.Num1=20;
group1.Num2=10;
group1.Add();