Program copy.cs

using System;

class Program
{
    static void Main(string[] args) // Add a Main method
    {
        // Your code here
        Complex c0 = new Complex(-2, 3);

        Complex c1 = new Complex(-2, 3);

        Complex c2 = new Complex(1, -2);

        Console.WriteLine($"{c0}");

        Console.WriteLine(c1);

        Console.WriteLine(c2);

        Console.WriteLine($"{c1} + {c2} = {c1 + c2}");

        Console.WriteLine($"{c1} - {c2} = {c1 - c2}");

        Complex c3 = c1 + c2;

        Console.WriteLine($"{c3} in polar form is {c3.Modulus:f2}cis({c3.Argument:f2})");

        Console.WriteLine($"{c0} {(c0 == c1 ? "=" : "!=")} {c1}");

        Console.WriteLine($"{c0} {(c0 == c2 ? "=" : "!=")} {c2}");


    }
}