26. Pointer as function parameter

• There are two ways to pass a pointer to a function:

  
  #include <iostream>
  using namespace std;
  
  // function gets a pointer to double
  void take_pointer( double * ptr )
  {
      cout << *ptr << '\n';
  }
  
  // function gets an "array" of doubles
  void take_fossil( double ptr[] )
  {
      cout << ptr[ 0 ] << '\n';
  }
  
  int main()
  {
      double price = 1.52;
      double * location = &price;
      take_pointer( location );
      take_fossil( &price );
      return 0;
  }