c4-9.cpp

C++面向对象设计教材例题程序4 C++面向对象设计教材例题程序4

#include <iostream>
using namespace std;
class Complex
 {public:
   Complex(){real=0;imag=0;}
   Complex(double r,double i){real=r;imag=i;}
   operator double() {return real;}    
  private:
   double real;
   double imag;
 };
 
int main()
{Complex c1(3,4),c2(5,-10),c3;
 double d;
 d=2.5+c1;
 cout<<d<<endl;
 return 0;
}