public static void Start()
{
MathClass math = new MathClass();
System.Console.WriteLine(math.Addition(2, 3));
TextClass text = new TextClass();
System.Console.WriteLine(@"Hello World");
}
static void Main(String[] args)
{
MathClass myClass = new MathClass();
myClass.FirstNumber = 10;
myClass.SecondNumber = 10;
Console.WriteLine("Addition result :" + myClass.Addition());
Console.WriteLine("Substraction result :" + myClass.Substraction());
Console.WriteLine("Multiplication result :" + myClass.Multiplication());
Console.WriteLine("Division result :" + myClass.Division());
Console.ReadLine();
}