How to sum 2 complex number using PORO(Passing Object and Return Object)?

CODE

How to sum 2 complex number using PORO(Passing Object and Return Object)?

//Write a program to sum of 2 complex number…

#include<iostream>

using namespace std;

class comp

{

    float r,i;

    public:

    void setValue(float r1,float i1)

    {

        r=r1;

        i=i1;

    }

    comp pro(comp c2)

    {

        comp c3;

        c3.r=r+c2.r;

        c3.i=i+c2.i;

        return c3;

    }

    void show()

    {

        cout<<r<<" + i "<<i;

    }

};

int main()

{

    float r1,r2,i1,i2;

    comp c1,c2,c3;

    cout<<"enter first complex number:";

    cin>>r1>>i1;

    c1.setValue(r1,i1);

    cout<<"enter second complex number:";

    cin>>r2>>i2;

    c2.setValue(r2,i2);

    c3=c1.pro(c2);

    cout<<"\n sum of complex numbers:";

    c3.show();

}

Output:

enter first complex number:45

4

enter second complex number:12

7

 sum of complex numbers:57 + i 11