private static void Main(string[] args)
{
//Sum Operation
var add = new Context(new SumOperation());
Console.WriteLine(add.ExecuteOperation(3, 4));
//Sub Operation
var sub = new Context(new SubOperation());
Console.WriteLine(sub.ExecuteOperation(3, 4));
//Mul Operation
var mul = new Context(new MulOperation());
Console.WriteLine(mul.ExecuteOperation(3, 4));
//Div Operation
var div = new Context(new DivOperation());
Console.WriteLine(div.ExecuteOperation(3, 4));
Console.ReadKey();
}
