how to return obj in cpp

How To Return Object 

PROGRAM:

#include<iostream>
 
using namespace std;
 
class Complex{
    int x,y;
 
public:
    void setdata(int a,int b){
    x=a; y=b;
    }
    void showdata(){
    cout<<"\nx = "<<x<<" y = "<<y;
    }
    friend Complex addition(Complex,Complex);
};
 
Complex addition(Complex a,Complex b){
Complex temp;
    temp.x=a.x+b.x;
    temp.y=a.y+b.y;
return temp;
}
 
int main(){
Complex c1,c2,c3;
c1.setdata(3,2);
c2.setdata(2,3);
cout<<"\n c1:";
c1.showdata();
cout<<"\n c2:";
c2.showdata();
c3=addition(c1,c2);
cout<<"\n c3:";
c3.showdata();
return 0;
}