text: /*
      Fetching the area of a circle as a reference parameter
      and not as a return value 
  */
  #include <iostream>
  using namespace std;
  
  const double Pi = 3.1416;
  
  // output parameter result by reference
  void Area(double radius, double result)
  {
      result = Pi * radius * radius;
  }
  
  int main()
  {
      cout << "Enter radius: ";
      double radius = 0;
      cin >> radius;
  
      double areaFetched = 0;
      Area(radius, areaFetched);
  
      cout << "The area is: " << areaFetched << endl;
      return 0;
  }