运算符重载

public struct Complex 

{

    public double real;

    public double imaginary;

 

    public Complex(double real, double imaginary) 

    {

        this.real = real;

        this.imaginary = imaginary;

    }

    public static Complex operator + (Complex c1) 

    {

        return c1;

    }

    public static Complex operator - (Complex c1) 

    {

        return new Complex(-c1.real , -c1.imaginary);

    }

    public static bool operator true (Complex c1) 

    {

        return c1.real !=0 || c1.imaginary != 0;

    }

    public static bool operator false (Complex c1) 

    {

        return c1.real ==0 && c1.imaginary == 0;

    }

    public static Complex operator + (Complex c1, Complex c2) 

    {

        return new Complex(c1.real + c2.real, c1.imaginary + c2.imaginary);

    }

    public static Complex operator - (Complex c1, Complex c2) 

    {

        return c1 + (- c2 );

    }

    public static Complex operator * (Complex c1, Complex c2) 

    {

        return new Complex( c1.real * c2.real - c1.imaginary * c2.imaginary,

            c1.real * c2.imaginary + c1.imaginary * c2.real );

    }

    public static Complex operator * (Complex c, double k )

    {

        return new Complex( c.real * k, c.imaginary * k );

    }

    public static Complex operator *( double k, Complex c )

    {

        return c * k;

    }

 

    public override string ToString()

    {

        return(System.String.Format("({0} + {1} i)", real, imaginary));

    }

 

    public static void Main() 

    {

        Complex num1 = new Complex(2,3);

        Complex num2 = new Complex(3,4);

 

        Complex result = num1 ? - num1 * 5 + num1 * num2  :  new Complex(0,0);

 

        System.Console.WriteLine("First complex number:  {0}", num1);

        System.Console.WriteLine("Second complex number: {0}", num2);

        System.Console.WriteLine("The result is: {0}", result);

    }

}