6

#include  
using namespace std; 
class Complex 
 {public: 
   Complex(){real=0;imag=0;} 
   Complex(double r){real=r;imag=0;} 
   Complex(double r,double i){real=r;imag=i;} 
   operator double(){return real;} 
   void display(); 
  private: 
   double real; 
   double imag; 
 }; 
    
void Complex::display() 
{cout<<"("<