Real And Img Part In C++ And OOPS

#include<iostream.h>#include<conio.h>
class complex
{
float x,y;
public:
complex()
{}
complex (float real, float imag)
{
x=real;
y=imag;
}
complex operator +(complex c)
{
complex temp;
temp.x=x+c.x;
temp.y=y+c.y;
return(temp);
}
void display()
{
cout<<x<<"+i"<<y;
}
};
void main()
{
clrscr();

complex  c1(1.2,3.4);
complex c2(5.6,7.8);
complex c3;
c3=c1+c2;
cout<<"\nC1:-";
c1.display();
cout<<"\nC2:-";
c2.display();
cout<<"\nC3:-";
c3.display();
getch();
}