#include <iostream>
#include <iomanip>
using namespace std;
int main()

// a program to convert gallons to liters

{   const int MAXGALLONS=20;
    const int STARTVAL=10 ;
    const int STEPSIZE=1;
    int gallons;
    double liters;

   cout << "GALLONS     LITERS\n";
   cout << "-------     -------\n" << endl;

   gallons=STARTVAL;

   // set output formats for floating-point numbers only

    cout << setiosflags (ios::showpoint) << setiosflags (ios::fixed)
         << setprecision(3);

    while (liters>=gallons)

    { cout << setw(4) << gallons;
      cout << setw(9) << liters;
      gallons = 3.785*liters;
    }
      return 0;
}