using System; namespace ComplexNumbersExample { class Program { static void Main(string[] args) { Complex c1 = new Complex(3, 4); Complex c2 = new Complex(5, -2); Console.WriteLine($"c1 = {c1}"); Console.WriteLine($"c2 = {c2}"); Console.WriteLine($"c1 + c2 = {c1 + c2}"); Console.WriteLine($"c1 - c2 = {c1 - c2}"); Console.WriteLine($"c1 * c2 = {c1 * c2}"); Console.WriteLine($"c1 / c2 = {c1 / c2}"); Console.WriteLine($"Real part of c1 = {c1.Real}"); Console.WriteLine($"Imaginary part of c1 = {c1.Imaginary}"); } } }This code creates two complex numbers, `c1` and `c2`, and performs various arithmetic operations on them. It also demonstrates how to obtain the real and imaginary parts of a complex number. The package library for this example is the System.Core library. Overall, the System Complex package is a useful tool for any application that requires complex number calculations. It provides a simple and efficient way to perform complex arithmetic operations, making it an ideal choice for mathematicians, engineers, and scientists.