HSC: Addition of Complex numbers(medium)

#include<iostream.h>
#include<conio.h>

class Complex
{
double real;
double imag;
public:
    Complex()
        {
        real=1;
        imag=1;
        cout<<"Default Constructor called"<<endl;
        }

    Complex(int r, int i)
        {
        real=r;
        imag=i;
        cout<<"Parameterized Constructor called"<<endl;

        }

        void display()
        {
        cout<<"Complex number is"<<endl;
        cout<<real<<"+"<<imag<<"i"<<endl;
        }
    Complex operator+(Complex);


};

Complex Complex::operator+(Complex other)
{   Complex result;
    result.real = real + other.real;
    result.imag = imag + other.imag;
    return result;
}


void main()
{
clrscr();
Complex x,y(2,3),z;
x.display();
y.display();
z=x+y;
z.display();
getch();



}