Data Types C++ Tutorial

#include 
using namespace std;
int main()
{
  double height = 2.2, width = 3.3, length = 4.4;
  double perimeter = 0.0;                        
  double rollwidth = 21.0;                 
  double rolllength = 12.0*33.0;           
  int strips_per_roll = 0;                       
  int strips_reqd = 0;                           
  int nrolls = 0;                                
  strips_per_roll = rolllength / height;      
  perimeter = 2.0*(length + width);           
  strips_reqd = perimeter / rollwidth;        
  nrolls = strips_reqd / strips_per_roll;     
  cout << nrolls;
  return 0;
}