Using friend function division between two number in c + +

using namespace std;
#include<iostream>
#include<conio.h>
class xyz;
class abc
{
private:
int a;
int b;
public:
void input();
friend void div(abc,xyz);
};
void abc::input()
{
cout <<"\n enter the value of a:";
cin>>a;
cout<<"\n enter the value of b:";
cin>>b;
}

       class xyz
       {
        private:
        int x;
        int y;
        public:
        void input();
        friend void div(abc,xyz);
        };
        void xyz::input()
        {
        cout<<"\n enter the value of x:";
  cin>>x;
  cout<<"\n enter the value of y:";
  cin>>y;  
  }
 
 
  void div(abc a1,xyz x1)
  {
  int t,s;
  if(a1.a>x1.x)
  {
  t=a1.a/x1.x;
  cout<<"\n "<<"a"<<"/"<<"x"<<"="<<t;
 
  }
 
  if(a1.b>x1.y)
  {
  s=a1.b/x1.y;
  cout<<"\n "<<"b"<<"/"<<"y"<<"="<<s;
 
  }
 
  }
  int main()
  {
  abc A;
  xyz X;
  A.input();
  X.input();
  div(A,X);
  return 0;
  }