//Print 0 0.5  1  1.5  2  2.5  3 3.5  4  4.5
#include <iostream>
using namespace std;
void main()
{ double n;  //used to 'drive' the loop
  for (n = 0; n<5.0; n=n+0.5)
  {  cout<<n<<"\n";
  } //for loop
} //main