C++ - Program do while

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

main()
{
  int i=1,a=5,n;
  cout<<"batas ulang = ";cin>>n;
  do
  {
     cout<<"\nNilai ke "<<i<<" = "<<a;
    a+=10;
    i+=2;
  }
   while(i<=n);
  getch();
}