C# Complex numbers

using System;
public struct Complex
{
    public int real;
    public int imaginary;

    public Complex(int real, int imaginary)
    {
        this.real = real;
        this.imaginary = imaginary;
    }


    public static Complex operator +(Complex c1,
    {
        return new Complex(c1.real + c2.real, c1.
    }


    public override string ToString()
    {
        return (Stream.Format("{0} + {1}i", real,
    }
}


class TextComplex
{
    static void Main()
    {
                Complex num1 = new Complex(2, 3);

        Complex num2 = new Complex(3, 4);

        Complex sum = num1 + num2;

        Console.WriteLine("First Complex Number :  {0}", num1);

        Console.WriteLine("Second Complex Number : {0}", num2);

        Console.WriteLine("The Sum of the Two Numbers : {0}", sum);

        Console.ReadLine();
    }
}