// Annother illustration of C++ reference parameters. 
// Returns a reference to local a static variable. Strange, but compiles and runs as expected.

#include <iostream>
#include <string>

int& f(bool b){
  static int i = 5, j = 10;

  std::cout << "i: " << i << "  ";
  std::cout << "j: " << j << std::endl;

  if (b)
    return i;     
  else 
    return j;     
}

int main()
{
  using namespace std;

  int a, b;
  a = b = 0;

  f(true) = 15;            // 5 10.  Then assigning 15 to i.
  f(false) = 20;           // 15 10. Then assigning 20 to j.
  f(true) = 25;            // 15 20. Then assigning 25 to i.
}