OPERATOR OVERLOADING.txt

#include <iostream>
using namespace std;

class complex {
    double re; double im;
public:
    complex(double r=0,double i=0) : re(r) , im(i)
    {
        //cout<<"CONSTRUCTOR CALLED";
    } 
    ~complex() {}
    friend complex operator+(const complex& a,const complex& b)  //1
    {
        return complex(a.re+b.re,a.im+b.im);
    }
    friend complex operator+(const complex& a, double d)  //2
    {
        complex c(d);
        return a+c;  //1 is called
    }
    friend complex operator+(double d, const complex& a) //3
    {
        complex b(d);
        return a+b;  // 1 is called
    }
    
    friend istream& operator >>(istream & is,complex& a)  //4
    {
        is>>a.re>>a.im;
        return is;
    }
    
    friend ostream& operator <<(ostream & os,complex& a)  //5
    {
        os<<a.re<<" +i"<<a.im<<endl;
    }
    void print()
    {
        cout<<re<<" + i"<<im<<endl;
    }
};



int main() {
    
    complex c1(2.67,7.25),c2(1.43,2.41),c3 , c4;
    c3=c1+c2;     c3.print();  //1 
    c3 = 1.34 + c2; c3.print(); //3 
    c3 = c1 + 6.79;  c3.print(); //2
    cin>>c4>>c2;   c4.print();  //4
    cout<<c4<<c2;                 //5
    
}