static void Main(string[] args)
{
int option;
Arithmetic a1 = new Arithmetic();
a1.GetA();
a1.GetB();
a1.DisplayOptions();
System.Console.Write("Enter the Arithmetic Operation number: ");
option = Convert.ToInt32(System.Console.ReadLine());
switch (option)
{
case 1:
System.Console.WriteLine($"Result: {a1.Addition()}");
break;
case 2:
System.Console.WriteLine($"Result: {a1.Subtraction()}");
break;
case 3:
System.Console.WriteLine($"Result: {a1.Multiplication()}");
break;
case 4:
System.Console.WriteLine($"Result: {a1.Division()}");
break;
default:
Console.WriteLine($"An unexpected option selected: ({option})");
break;
}
}