static void Main(string[] args)
{
int num1 = 34;
int num2 = 56;
int realResult = MathEngine.Addition(num1, num2);
Console.WriteLine("Result= {0}", realResult);
Complex c1 = new Complex(23, 54);
Complex c2 = new Complex(100, 44);
Complex c3 = new Complex();
c3 = c1 + c2;
Console.ReadLine();
}