C++ Function Definition inline functions

#include <iostream>
using namespace std;
// converts pounds to kilograms
inline float lbstokg(float pounds)
{
   return 0.453592 * pounds;
}
int main()//from   w w w.ja  va 2  s.  c om
{
   float lbs;
   cout << "\nEnter your weight in pounds: ";
   cin >> lbs;
   cout << "Your weight in kilograms is " << lbstokg(lbs) << endl;
   return 0;
}