static void Main(string[] args) { ComplexNumber Firstcomplexnumber = new ComplexNumber(2, 5); ComplexNumber Secondcomplexnumber = new ComplexNumber(-1, 8); ComplexNumber Resultcomplexnumber = MathLibrary.ComplexAddition(Firstcomplexnumber, Secondcomplexnumber); Console.WriteLine("resultant number : " + Resultcomplexnumber); Console.ReadLine(); }