Currency denomination cpp program

#include<iostream.h>

#include<conio.h>

#include<math.h>

class currency

{        int t,rs,n1000,n500,n100,n50,n20,n10,n5,n2,n1;

  public:

          currency(int n)

          {        rs=n;}

          void deno();

};

void currency::deno()

{        t=rs;

          n1000=t/1000;

          t=t%1000;

          n500=t/500;

          t=t%500;

          n100=t/100;

          t=t%100;

          n50=t/50;

          t=t%50;

          n20=t/20;

          t=t%20;

          n10=t/10;

          t=t%10;

          n5=t/5;

          t=t%5;

          n2=t/2;

          n1=t%2;

          t=n1000+n500+n100+n50+n20+n10+n5+n2+n1;

cout<<" Given Rs. is "<<rs<<" and the expecting denominations    are \n";

          cout<<" 1000  :"<<n1000<<endl;

          cout<<" 500   :"<<n500<<endl;

          cout<<" 100   :"<<n100<<endl;

          cout<<" 50    :"<<n50<<endl;

          cout<<" 20    :"<<n20<<endl;

          cout<<" 10    :"<<n10<<endl;

          cout<<" 5     :"<<n5<<endl;

          cout<<" 2     :"<<n2<<endl;

          cout<<" 1     :"<<n1<<endl;

          cout<<" Total notes \t"<<t<<endl;

          getch();

}

void main()

{        clrscr();

          int n;

          cout<<" Enter your amount:";

          cin>>n;

          currency r(n);

          r.deno();

}