//whichconstr.cpp
#include "whichconst.h"

void f(Tails t)
  {
  Tails::getOut() << "In: void f(Tails t)" << endl;
  }
    
void g(Tails & t)
  {
  Tails::getOut()<< "In: void g(Tails & t)" << endl;
  }

Tails h()
  {
  Tails::getOut()<< "In: Tails h()" << endl;
  Tails t;
  return t;
  }
  
  Tails i(Tails t)
  {
  Tails::getOut()<< "In: Tails i(Tails t)" << endl;
  return t;
  }
  
  Tails j(Tails & t)
  {
  Tails::getOut()<< "In: Tails j(Tails & t)" << endl;
  return t;
  }

Tails & k()
  {
  Tails::getOut() << "In: Tails & k()" << endl;
  Tails t;
  return t;
    //CW warning: function result is a pointer/reference 
    //to an automatic variable
  }

Tails & m(Tails t)
  {
  Tails::getOut() << "In: Tails & m(Tails t)" << endl;
  return t;
   }

Tails & p(Tails & t)
  {
  Tails::getOut() << "In: Tails & p(Tails & t)" << endl;
  return t;
  }

#define TEST_TAILS
#ifdef TEST_TAILS
int main()
  {
  Tails a;
  Tails b;
  b=a;
  Tails c(a);
  Tails d=a;
  a.summary(a.getOut());

  Tails::getOut() << "\nvoid f(Tails t)"
    << "\nf(a) :\n";
  f(a);
  
  Tails::getOut() << "\nvoid g(Tails & t)"
     << "\ng(a):\n";
  g(a);
  
  Tails::getOut() << "\nTails h()"
   << "\nb=h():\n";
  b=h();
  
  Tails::getOut() << "\nTails i(Tails t)"
    << "\nb=i(a):\n";
  b=i(a);
   
  Tails::getOut() << "\nTails j(Tails & t)"
     << "\nb=j(a):\n";
  b=j(a);
  
  Tails::getOut() << "\nTails & k()"
     << "\nb=k():\n";
  b=k();
  
  Tails::getOut() << "\nTails & m(Tails t)"
     << "\nb=m(a):\n";
  b=m(a);
  
  Tails::getOut() << "\nTails & p(Tails & t)"
    << "\nb=p(a):\n";
  b=p(a);
  
  Tails::summary(Tails::getOut());
  return 0;
  }
#endif