Add + operator for Complex type : Operator overload Binary Plus Subtract : Operator Overload C# Examples

    
using  System;

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

        static  public  Complex  Add(  Complex  lhs,  Complex  rhs  )  {
                return  new  Complex(  lhs.real  +  rhs.real,  lhs.imaginary    +  rhs.imaginary  );
        }

        static  public  Complex  Add(  Complex  lhs,  double  rhs  )  {

                return  new  Complex(  rhs  +  lhs.real,  lhs.imaginary  );
        }

        public  override  string  ToString()  {
                return  String.Format(  "({0},  {1})",  real,  imaginary  );
        }

        static  public  Complex  operator+(  Complex  lhs,  Complex  rhs  )  {
                return  Add(  lhs,  rhs  );
        }

        static  public  Complex  operator+(  double  lhs,  Complex  rhs  )  {
                return  Add(  rhs,  lhs  );
        }

        static  public  Complex  operator+(  Complex  lhs,  double  rhs  )  {
                return  Add(  lhs,  rhs  );
        }

        private  double  real;
        private  double  imaginary;
}

public  class  MainClass
{
        static  void  Main()  {
                Complex  cpx1  =  new  Complex(  1.0,  3.0  );
                Complex  cpx2  =  new  Complex(  1.0,  2.0  );

                Complex  cpx3  =  cpx1  +  cpx2;
                Complex  cpx4  =  20.0  +  cpx1;
                Complex  cpx5  =  cpx1  +  25.0;

                Console.WriteLine(  "cpx1  ==  {0}",  cpx1  );
                Console.WriteLine(  "cpx2  ==  {0}",  cpx2  );
                Console.WriteLine(  "cpx3  ==  {0}",  cpx3  );
                Console.WriteLine(  "cpx4  ==  {0}",  cpx4  );
                Console.WriteLine(  "cpx5  ==  {0}",  cpx5  );
        }
}