Need help(complex no. class)

Hello,,
I have made a class of complex numbers with functionality that it can add and subtract. But i get loads of errors in it . Can anybudy help me.

Code:

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

class complex
{ int r;
  int i;

  public:

  complex (int a, int b)
  {
  r=a;
  i=b;
  }
  void input ()
  {
  cin>>r>>i;
  }
  complex add(complex k)
  {
  complex add;
	add.r=r+k.r;
	add.i=i+k.i;
  return add;
  }
  complex sub(complex q)
  {
  complex sub;
	sub.r=r-q.r;
	sub.i=i-q.r;
  return sub;
  }
  void print()
  {
  cout<<r;
  cout<<i;
  }

int main()
{  class d,e;
   complex c(7,8);
   d.input();
   e=c.add(d);
   e.print();
   e=c.sub(d);
   e.print();
   return 0;
}

Code:

#include<iostream>
#include<math.h>


class complex { 
  int r;
  int i;

public:
  complex() : r(0), i(0) {}

  complex(int a, int b) {
    r = a;
    i = b;
  }

  void input() {
    std::cin>>r>>i;
  }

  complex add(complex k) {
    complex add;
    add.r = r+k.r;
    add.i = i+k.i;
    return add;
  }

  complex sub(complex q) {
    complex sub;
    sub.r=r-q.r;
    sub.i=i-q.r;
    return sub;
  }

  void print() {
    std::cout<<r;
    std::cout<<i;
  }
};
  int main()
  {  
    complex d,e;
    complex c(7,8);
    d.input();
    e=c.add(d);
    e.print();
    e=c.sub(d);
    e.print();
    return 0;
  }

ur code which is working

And if u r getting error please post also it will be easy to detect

thnk yew so vey much RockyMarrone,, now its working =))

Enjoy C++ Programming And u r most Welcome