Note: (Restricted functionality due to obvious reasons!)
Minimal Code ( Raw-View ) :
#include<iostream.h>
#include<conio.h>
class cmplx
{
int a,b,c,d;
public :
void enter()
{
cout<<"Enter real part or Ist complex number : ";cin>>a;
cout<<"Enter imaginary part of complex number : i ";cin>>b;
cout<<"Enter real part or IInd complex number : ";cin>>c;
cout<<"Enter imaginary part of complex number : i ";cin>>d;}
//void sum()
void sum()
{
cout<<a+c<<" ";
if((b+d)>0){cout<<"+";}
else{cout<<"-";}
cout<<" i ";
if((b+d)>0){cout<<b+d;}
else{cout<<-(b+d);}
}
}m;
void main()
{
line2:
m.enter();
cout<<endl<<"The sum of your complex numbers is : ";
m.sum();
cout<<endl<<endl<<endl<<"Do you want to add more numbers(y/n) : ";
char y;
cin>>y;
if(y=='y'){goto line2;}
}